Being an xbox newcomer, some of the XB games I wanna play but can't due to incompatibility include the DOA games, SC IV/V, Bionic Commando Rearmed 1 and 2009, and SSFII Turbo. But easily the biggest I really want but don't get why it's not available yet is Blinx 2. Blinx 1 made it... I aim to get it shortly, but the sequel isn't?!? A game MS fully owns and is the only other game in the series? That literally has to be part of the next batch because I can't see much reason why it's not already on there. Plus it would be neat to have both games on Series X, and they already got half of them done.
The Capcom Stuff I mostly want because they and Konami put out a ton of goodie gems on XBLA, and Konami's mostly caught up save for stuff like Rush N Attack or Track N Field, while Capcom has odd exclusions such as physical Puzzle Fighter 2, several Street Fighter games, and the aforementioned BC games. You'd think a bunch of those like SSFIIHD and BCR1 would be no brainers, but I guess Capcom isn't quite interested.