Swimmingly

Well, there's a Surge for growth, which is a distinctly non-fundemental aspect of reality. I think time could still work, letting you speed up your own movements, slow down another's, etc. Around people who can make rocks explode, fly, launch you into space, treat a road like a hockey rink, etc. some minor temporal powers would not be out of place.

Perhaps highstorm-flooding makes up for the lack of a single large moon, taking the role that tides have on earth.

I guess that's true. Still, there's probably something there, or the locals would have noticed a strong breeze every so often, maybe. Ir maybe not.

It might even be Time - and perhaps one of the orders who used it are the reason divination is so taboo in Vorinism. After all, not all spren are so discerning. This could even be what the law-abiding citizen did to speed up when trying to catch the young thief. Also, "stonewarden" sounds a lot like "stormwarden"- the one class of alethi society that is allowed to violate the taboo of prediction.

So high storms are actually the dispersing of weekly magical explosions on the other side of the planet with enough energy to outdo Hiroshima by several factors of magnitude? Somehow, that's even more awesome than the continent-sweeping hurricanes I assumed they were. Also, if the storm wall is in fact driven by a magical shockwave, then, unless it only propagates in one direction, shouldn't there be another continent with some serious mountains between Panroshea and the Origin, to the west?

It was nice of Brandon to write out the magic system's rules as something nice and specific, wasn't it? You've got a system that contains objects that push you away and objects that you push, made of things that would not conceivably be lying everywhere but are common enough to put them wherever you want without it looking silly. Compared to standard telekinesis, that makes for a much more plausible way to only let the player interact with the things you want them to.

You know, once you have unlimited power, what's the point of defying the nature of your Shard to cause harm to a world? There's no point to it, unless it facilitates you getting more power. All antagonistic behaviour is driven by something opposing you - in the absense of that, why wouldn't you be magnanimous? Unless you really like being able to strike down the puny humans at will.

I think the problem is not that we can't extract that information, it's that we don't know why Devil may cry is inferior to Arkham. Is the problem the controls? The plot? The look of the game? The linearity or openness of it?

Still, it would be interesting to see whether those aluminum alloys work allomantically or feruchemically

As stated in tAoL, alloying a metal changes its magical properties intrinsically. Sure, you have a bit of wiggle room with impurity vs. completely wrong, but the addition of silver turns tin into pewter, with the entirely different properties that entails. This applies to feruchemy and presumably hemalurgy as well - or it should intuitively, anyway. Aluminum, however, can be found in various different alloys which all exhibit allomantic inertness. Does this rule out aluminum abilities as part of a new magic system?

What happens to the power locked up in atium or lerasium if it's made into a bad alloy? If, for example, the kandra had alloyed their atium to create something allomantically inert, would Ruin have been able to reclaim it?

He simply sees cessation of existence as a lower sort of hell than the one he's doomed to enter.

Always use the Commas: Let's eat, Grandma! vs. Let's eat Grandma!

Again, that still seems more like saying "this information exists nowhere but in the instictual knowlege of Shards, and the uses are diverse/esoteric/exacting enough that you need someone to tell you exactly what to do the first time" than "there is no way to use/create this without being a Shard/splinter."

Kelsier, I believe, did acknowledge that he wouldn't have much chance against Sazed in an all-out fight - or at least made a cryptic comment or two alluding to that.

What about aluminums actual, magical-interaction nonstick properties? Could that be a hint as to a "fourth art?"

If everything's secretly sentient there, even vegetarians aren't justified...

Just would like to note that the blatant use of that quote implies that a non-shard splinter could not understand it, whereas to my ears, it simply means that the only ones in-universe who understand that so far are shards and splinters. It's like saying, "Before he showed anybody his work, Einstein was the only one who could understand general relativity." The casual implication is that no one else DOES, even though technically, the sentence states that nobody could ever understand. The sentence was presented in a casual format, so I think it would be wise to consider the casual implications rather than the technically correct interpretation.

I think that feruchemy was a magic system originally imagined in a different setting than Mistborn, and was a more balanced riff on some of the Kkell powers. From what I can see, feruchemy is basically the ability to transpose spiritual and cognitive aspects into physical objects, where they're held in a stasis until retrieved. This ability is genetic, and, regardless of origins, is a piece of highly specific power contained in sDNA, acting more like a bridge than anything else. We know that people from different Shardworlds would not be able to easily access other magic systems (except for Hoid and the Yolenites) - I'm guessing that the inability for the non-Terris to use feruchemy despite having both Ruin and Preservations' power is just this on a more local scale. If unbalanced Shardosity is the only requirement for sentience, after all, then literally everything on Nalthis should be sentient, and Allomancers should be "more sentient" than anyone else.

This is a world with an abundance of gemstones and glowy magitech. They WILL make laser guns of some sort at some point, which will kill innocent Chasmfiends with ecologically unfeasible abandon.

Basically, the only obstacles to functional omnipotency for a Shard are Intent, personal small-i-intent, and opposition by other Shards. If the first isn't getting in your way, the second is aligned with the first or withered away, and you've eliminated opposition by other Shards, your only obstacle is time to apply your power with - and you are uncontested and immortal. Also a bit of an chull, cause of all that senseless devastation you're going to unleash out of spite.

I think that, like aluminum, other metals have magically significant qualities even when not charged, part of a spike, or burnt by an allomancer. They have to be quite pure to work like this, and may need to be treated in a certain way - perhaps aluminum's magic nullifying properties are just the most obvious. They are probably divided into qualities similar to the other arts, such as Physical, Cognitive, Spiritual for Feruchemy; Physical, Enhancement, Mental, Temporal for Allomancy; etc. Given that these properties work in alloys as well, it's possible that purity is not absolutely necessary for these effects.

Alright, you can find and maim the 5th grader - I don't want prison time and a guilty conciounce

I personally think think that the worshippers of Trell have evolved into the main Southern religion, a machine cult focused around mechallomancy and structual/magical uses for the metals directly

If you reread, you'll note that I said when a bloodmaker is FACING anybody but those combinations, he can pretty easily anchor and push back, or else force the pusher to abandon the effort. Maybe a compounder could push hard enough, but the way steel works, they would be injured as much or more than the competition.