I'm getting my xbox later this month as an xmas gift from my brother. I still have a backlog I'm working through on current-gen, but I want to make sure I buy any cross-gen games on next-gen platforms. I've already been hit with Tomb Raider Definitive Edition, but I'm not upset by that at all. I bought the game the day it came out and enjoyed it - I'm eager to double dip when it reaches a budget price.
So far, I'm looking forward to adding these games to my xbox one collection whenever I get the system - all these games are cross-gen, and with the exception of Tomb Raider, I haven't played any of them yet:
Rayman Legends
Max and the Curse of the Brotherhood
Walking Dead Season 2
Assassin's Creed Black Flag
Call of Duty Ghosts
Guacamelee
Tomb Raider (only at a budget price)