Xcom 2 really don't need more content on Xbox. The game is barely stable as it is and higher difficulties will basically cause the game to self destruct. The expansion freezes on the title screen for alot of players.
I remember a few crashes, but I've beaten the game multiple times across multiple difficulties. I think it had more stability issues at launch, but I played through it over the summer on the 2nd highest difficulty.
EW had time limited resources to dissuade the half-move-overwatch-crawl that plagued EU, while X2 has single timed objectives that you do have to push to reach them. I found EW much faster paced and often couldn't reach both resources without restarting. That said, I think that's a good risk/reward set up and only collecting 1/2 the resources would still leave you with enough to upgrade a few of your core squad. Even save scamming to collect every meld canister won't let you go ham on the upgrades, but I think that keeps the decisions meaningful.
Xcom2 is great. The DLC raises the difficulty, but also adds a lot of powerups for the player. WotC rebalances the classes for the better, as the base game had a number of trash choices, in addition to a bunch of other changes for the better. I think if you liked EU, EW and WotC would be solid choices. They go on sale often, so I expect they would drop during the holiday sales.
I was sad to see the free Tactical DLC is only for PC. As others said, the base x2 wasn't planned to come to consoles so maybe we can get it after a delay. Fingers crossed!