- Gears Ultimate to 4k (seriously, it's the only one that won't be 4k on XSX)
- Sunset Overdrive
- Dead Rising 3
- Alien Isolation
- Far Cry 4
- AC Unity, Syndicate and 4 (hell, all the AC games deserve at least 4k)
- Call of Duty Black Ops 3 up to 4k
- Metro 2033 and Last Light into 4k
Honestly, most of the games I want enhanced are 360/OG games rather than Xbox One games. A couple X1 games look a bit iffy on my X1X on my 4k TV (mostly just Far Cry 4) but most games still look at the very least "okay" and when HDR is added next gen I feel they'll look much better.
Considering the first AC game was given a boosted resolution on X1X and all other AC games use the same engine, I am definitely expecting the entire AC series to be playable in 4k on XSX (if I had to guess, the other 360 games weren't already boosted either due to time constraints or power constraints from the other games)