What I would like explained in a new game isn't the fate of the Dwemer or possible snow elf survivors, it is soul trapping.

Before you say anything related to Dawnguard this is all dawnguard reveals:

While it shows Soul Cairn it only mentions black souls traveling there with only elves and men being their. (Except Arvak who was captured with his master and Durnheviir who traveled there.)
It doesn't explain how soul trapping works or what happens to non-elves/men.

I would like an explanation to what process actually powers enchantments and the fate of those trapped. Do trapped wolves go to "wolstheim" or some other place?

I put this in the lore forums as i hope you guys have some answers, please comment or reply