Yata

I really doubt of this, first of all Sazed has a very limitated view of what happen in the Cosmere. Second but more important. From the books don't seems that a Shard is capable of locate the position of his solid form (godmetal). Or Ruin would have find the Atium in 3 minutes

Also moderate invested object would stop a Shardblade. I asked to Mister Sanderson if a Metalmind would stop a Shardblade and He said yes. (then my trip to a Tin Ferring fighting a Shardbearer with his SmellMind-Sword XD)

For example Hemalurgy rips the Souls... Often the bindpoints used are fatal also as mundane wound (the chest for example) but if (for example) there is a bindpoint to steal Allomantic steel in a finger. And someone spike a Mistborn to those finder to steal his Steel.... The Mistborn would probably die for the Shock of his Soul bein ripped. And if He survives he would be lika a Nalthis's Drab.. with less Souls than normal and with a tons of problems (health, depression, ecc...). About He be capable of Surges... I will say no. But Nightblood may (probably) gift some thematic power through its bond to the partner (but to be honest I have no idea about what kind of abilities).

Of course I don't mean she will be "ah You killed Sadeas...ok"... But she would understand Adolin's reason (probably) and be a supporter to him (unless this link Adonlin with her father in her mind)

I think Shallan would help Adolin to recover from what he did. In my head it's what the Lightweaver Order does. Be the psicological helper to the other orders and the people. Their purpose to me is "improvement" take people and made express their potential or reforge broken people

He will die when his soul will be eated by Nightblood. On Nalthis the people survive a little because they have Breath. To be honest it's possible he may survive but a Soul wound it's often a death sentence.

If I don't remember wrong. The "element" is a bead of Lerasium that Hoid stoled from Scadrial in the WoA, but I may remember wrong.

I think you push the likenesses between Hemalurgy and the Shattering too far. The Hemalurgy is a Spiritual Genetic Engineering between spirit webs. But the Intents doesn't matter (sure you have to want to create a Spike to made Hemalurgy but it's not the type of Intent you talked about). The Hemalurgy isn't evil and neither its effect. Ruin didn't corrupt anything of the Spirit-Web in the Spikes. In the end to Ruin what you do with the Spikes in meaningless. To him only improve Entropy matters and you do this creating a Spike (breaking someone to do this). You may see for example how of three well knowed Hemalurgic Constructs. Only the Koloss are "evil" but they are made exactly to be feral warriors. It's not something build in the Spikes. Like you may see with Kandra with the Blessings of Mighty (the same Koloss's Spike). Neither the Inquisitor became "evil" to the Spikes. Of course became a Spiritual Patchwork may break a mind. Your Cognitive Self and your Spiritual self began to have too differences and this erode a man I presume (like a Soul Forgery poor made but forced to coexist with the reality). But it's nothing builded in the Hemalurgy.

In the Annotation Mister Sanderson said that Nightblood Bonds with everyone that use it at full power and then survive to the experience. After this moment that people will not suffer any desire or nausea from Nightblood. But Szeth without extra Investiture will die if Nightblood feed of him. Be a Squire may serve as first step to survive the Nightblood's requirement to bond

Brandon himself said we go to further with the "force" idea. Also the 16 Vessels were a force aganist Adonalsium. Of course this doesn't mean you are wrong, but be careful because a "force" may be also 16 determinate mortals with the right knowledge

Well If Szeth became a Nale's Squire (if this is possible with an Herald) will gain the ability to drawn in Stormlight and use fully Nightblood. PS: I have a theory with Nightblood once bonded will give to the partner the ability to use Stormlight, but Szeth will need some help to survive the Nightblood's bonding the first time

Like said, Sazed talked about Chromium and Cadmius the two "new metals". Of course from both of them you may find a Metallic Art viable alloy.

A Diminishing Heat Fabrial is the main candidate. We saw the opposite a Fabrial to generate Heat and in the Ars Arcanum it's stated that those kind of Fabrial are quite the same rules. Also the AonDor (like @Dunkum said) has quite an Infinite wide of use. Maybe you can't obtain this effect directly (I don't remember an Aon on the temperature) but we wit and physicis you may obtain the effect I presume

Probably the right question is: Are the other Shardpool capable of temporary Ascension like the Well ? I have a theory on this but it's all in what we will see on Roshar.

I am pretty sure of yes, there are too seon (at least in the pre-Road time) to fit one to one with the Aons. A Seon may "finalizate" his Aon. This probably mean It may active his Aon, but rememeber that the Seon now misses the Chasm line In a Delete Scene an Elantrian creates a Seon, but it's no more canon, therefore the answer is "maybe". But I think if you manage to remove a Devotion's Splinter from the Dor with some technique you may made a Seon... If the Devotion's Splinter alone sloowly turn in to a Seon from its own

I worked to the same idea for a while and I agree with you at the 100% But I think there are problems to store other things (aka the Human Attributes). To me it's hard to separate yourself from a standard human attributes, and I mean from the Cognitive Poin of view. To decide to store something soo deep radicate in yourself. The powers may be see as an extra to an human being, in your live you meet tons of powerless people, you may see the power as something external to an human being... the Human attributes are harder to separate in this way.

Sure sorry I forgot to link a reference http://www.theoryland.com/intvmain.php?i=1138#2

Shardblade may cut Aluminium (from WoB) Hard to say, spren are made by a mix of Honor and Cultivation's Investiture... Call them Tanavastium is an unfitting name. But you may call probably an alloy of Tanavastion and "Cultivation's Vessel's Name"ium. About the other I think there are only theories

Shame (it's what I feel when I think to you all and my grammatical Horror in English here on the forum)

I have this idea of how the Shattering happen: First kill God (well I have an idea also about this but it's not linked to this thread) Then the Vessels pulls from Adonalsium's Corpse using Spiritual Connection they were deeply connected. Probably the 16 was choosen to be compatible with parts of Adonalsium. Everyone of them obtain a shard of Adonalsium's Power.

turtles

Yeah but they were different Metalmind stick together. It would be wasy to push as the less invest of them. Once the "weak" metalmind is pushed the other follow the moviment.

Wheel of Time

much more this line seems to be strange if Frost is in the Great Roshar: Also the "life of another of the sixteen" seems point to an external group, with he isn't part of (but those part may isn't too strong)

Like @Oversleep said Breath slowly consumed itself when used... It's a really slow process but for example if I keep an Awakened sharf to do something for years probably some of the breath would be expired. NEW QUESTION (another of my nocturn mind trip): Is the Moon Sceptre (with probably another name or function) a pre-Shattering tool ?