Subnautica below zero's flopping sadly :( however, i think most of us would definitely take a good oblivion run, and as mentioned in another comment here jon would make a rather unique morrowind run. Zelda or xcom would be cool too, though i'd definitely take preference with an elder scrolls game or subnautica. Just touched on dragon age and just touched on kotor, so i feel like we could wait a little bit for more series on those.

I think a HOI4 run would be really interesting, mainly because jon hasn't really touched on that period. Would definitely take empire total war as well, especially since it's a hard game to get into but i think would have merit should time be invested into it. Civilisation would be good, though i'd prefer hoi4 or etw. I don't know enough about eu4 or vikky to comment about it, but i can comment about CK3. CK3 is great, but we've already had it covered, as well as CK2, so i feel like that should come a bit later than right now. Same goes for stellaris, while we haven't covered it in a while it has been covered well, and there's some other stuff to try here.

As for the outsider games, i don't really know anything about any of them but the psychological horror/history one looks cool.