Update:
-Thanks to BliZZ's awesome Gambit mod, he's nearly complete. All that's left now is to find out exactly which fb fightstyle_default goes inside and getting Xbox-compatible icons for Gambit.
-Additional research has been done on simulator missions. It's not hard at all to do a new mission now. Also, Xbox1 does not have the sound files for the Next-Gen simulator missions, so those will be scrapped in favor of Moon Knight/Gambit/Hawkeye *hopefully, gotta ask Tommy for a PS2 export, but I'm not ready for him*/Surfer simulator missions. That being said, I might actually replace Surfer along the way as he's cool, but he doesn't have enough variety to really be someone you'd play a lot.
-Speaking of sim missions, I've been toying with who to have Moon Knight fight. I think I've found him. Titannus. It's another Skrull sim, and I can just paste his junk into the bottom of another fb easily.
-I'm currently poking around in the XML2 x_voice.zss. My goal is to delete files that overwrite MUA stuff for Wolvie, Deadpool, Storm, Iceman and Ironman.