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I dont think so, but I could be wrong. My understanding of the push/pull issue for metalminds is more from their being Invested at all but not so much from Identity interference. I think the same can be said for the resistance to Pushing/Pulling on metal that is inside somebody. A case example being that Drabs are easier to Push but seem to have fully functioning and unique Identity (which is why an awakener cant take their animating Breath back.

Agreed, and Ive long expected to see exactly that eventually. At minimum it would be a very reasonable and humane (assuming it's reversable) way to contain metalborn and/or off-world criminals while they're actually in prison, but it might also be a sort of parole where they are allowed Out but not allowed to keep their powers active. That becomes a whole other can of worms that will depend heavily on the cultural outlook on Hemalurgy. It would make sense for people who are about to Die to want to leave a piece of themselves for their family and heirs, etc. But it's so easy to abuse with good ol' fashioned Murder that it would inevitably become a legal flashpoint. Just like the RL debates about assisted Suicide, there's a lot to untangle before the whole population would accept it. I doubt it would ever get to the point of Harvesting inmates against their will, but I could see a blanket Cultural Right to leave a piece of yourself behind that could still be open to inmates.

A Kumquat A Spider + a Demonic Bargain

Yes, the working theory is that it grounds out investiture (in the electrical sense). Per WOB's about Cosmere continuity, no Investiture can stick to aluminum*. So in the physical world it blocks investiture effects like a Faraday Cage for Investiture. And if you actually realmically interface it with your spiritweb directly, as with Hemalurgy, it prevents you from ever channeling Investiture and/or creating Investiture-based effects while it's inserted in your spiritweb. So while you have a part-aluminum spiritweb, thanks to the spike plugged into it, you'd be unable to use allomancy, feruchemy, sandmaster (per WOB), and presumably Surges, honorblades, or anything else that requires a Bond or Investiture to pass into, out of, or through you. *Which means that neither aluminum metalminds or aluminum Spikes ever actually gain an Investiture Charge, which is consistent with the evidence so far. Under this explanation it's interference rather than destruction (consistent with the Aluminum vs Silver WOBs) so logically those powers would come back once the Spike was removed unless they are specifically fragile. For example, it might just Kill a Returned because of the Divine Breath aspect of their Spiritweb, but since WOB says normal breaths are in the body and not the spiritweb, they might be safe. Im guessing that a Radiant bond would be suppress but not destroyed (the way leeching does not permanently sever it), and ditto Aviar bonds. Im assuming that All Powers interference would extend to things that create weak/temporary bonds like Midnight Essence spores, honorblades, or medallions. But anything that can operate entirely without sapient intervention like ettmetal devices or most rosharan fabrials would be safe unless the aluminum was physically close/touching it (to interfere the normal aluminum way).

The spike works by essentially adding additional functional parts of spiritweb to yours, and since Aluminum spikes can affect more than just scadrian magics I think it would be able to block your use of the powers regardless of whether it was natural or hemalurgic. I think the weirder question would be how it interacts with medallions. They are more external but still create and require a Bond to function, so the Aluminum Spike should block those Powers too. Ettmetal Grenades, on the other hand, require no interaction or Intent from a person so the aluminum spike would not block it.

It also might not have mattered in those specific instances, since any bind point would work equally. There are two scenario's where all bind points logically act the same: Aluminum Power Blocking Spikes, and Shardic Control of Kandra via two or more spikes. For those you dont care about a successful removal of Spiritweb or reintegration, just the basic realmic effect of the spike's presence. And hitting ANY bind point is a lot easier than hitting a specific one, and there are some specific ones that are relatively big targets. Shooting somebody through the eye socket is well withing Wax's abilities, for example, and WOB says there's a dense cluster of them around the heart so it might legitimately be hard to miss them all with a heart shot. PS. If we're talking about the night wax shot Paalm, Wax was not spiked at the time because that spike is the one he turned into a bullet and shot her with. He didnt shoot her with aluminum, it was his Pathian earring made into a bullet.

Agreed. Not to mention that if Fear of the Singers had been the 16's primary motivation, then the first thing the Shards would have done after taking BigA's power would have been to descend on Roshar and blast all the singers into oblivion. They wouldnt have been left to whichever Shards wandered by.

Meanwhile, Per WOB Rosharans are one material science lesson away from having nukes in Dalinar's technological era.

What are you looking at for circuit functionality, LED lighting or EV wire maybe? I would suggest considering more of a base, perhaps including some of the natural mountainside that it rises from, so that you have enough space for a battery cavity and any control circuit you'll need.

Agreed, especially since Aluminum being off-limits for Investiture effects is apparently considered such a continuity element that Peter wont allow Brandon to make the shardblade guards out of aluminum.

Agreed. And a big part of the classic Mutant Registration conversation is the inherent dangers posed by the entirely random and potentially catastrophic powers people might gain, but the Metallic Arts as they stand now are just not that Unknown to the general population, and overall getting weaker rather than trending stronger like Mutant powers. That sort of registration would probably be limited to off-worlders (which might arguably be a reasonable immigration policy) and any revival of the full Mistborn or Feruchemist of legend that might be unlocked through their scientific advancement. Also I could see a very strict and detailed system tracking Hemalurgic Spikes. For society's sake Hemulurgy would need to be either outlawed or heavily tracked and regulated to ensure spikes are either historical enough to predate laws or were created under whatever their "modern" definition of humanely harvested might be (full written consent of a terminal Donor, Heirloom family Spikes, etc).

I dont think we'll see magic surveillance Cameras for that sort of thing, but I could see ettmetal tech that uses A-Bronze to detect and alarm in the event of a nearby allomantic Burn.