Imo the best thing about an XOneX is the ability to run older (Xbox/X360) games, most of the times with framerate and resolution improvements.

That gen is a bitch to emulate, and there are lots of great games stuck on the X360 that were never ported to future platforms. Games such as Ace Combat 6, Ninja Gaiden 2, Prince of Persia Reboot’s DLC, etc…