What else would it be? Solstheim is the perfect place. I know it was in Bloodmoon, but still. Snow Elves? Riekling followers? Yeah, it's Solstheim.
Snow Elves are not a Solstheim thing tough... nor it seems to be important in any way to them. Only the final battle against the Nords happened there.
There are two other possible locations:
- Atmora - descendants of the Falmer slaves may live there. The land may be too cold for Nords now but maybe not for the Snow Elves
- Depths of the Blackreach... you know, the place from where these Falmer in TES5 came from (no, they were not always there... else nobody would believe they went extinct). This is the most likely option if we get Snow Elves (it is possible that not every Snow Elf was corrupted by the Dwemer gene manipulation)
- some other northern island
I don't know why people dislike the idea of going to Solstheim because I didn't think it was that small, and if we go there maybe Bethesda can give us some better werewolves that don't svck worse than mudcrabs.
Because many people want to visit NEW places, not revisit the old.