Recore 2.
I buy my Xbox One just for Recore, a sequel with better budget and without the flaws of the original could be great.
Quantum Break 2, Fable 4 and Perfect Dark will be good too.
Lost Oddyssey 2 (just a dream) or any game from Mystwalker. This is the studio i want ms to buy. Great rpgs and respected developers in japanese market.
Sorry for my bad english