aha finally some success! I went searching through the files and for some reason when I copied all of my captain Britain folders into my MUA directory, instead of merging folders like it should have new folders were being created outside of their rightful spots. I simply cut and paste these wandering files and presto, working Captain Britain moveset with accessory costumes and passives! Thank you so much for your help though!
And I must commend you, for not a ton of options you stretched out his repitoire very nicely. And now I can have an Excalibur to be proud of: Captain Britain, Nightcrawler, Colossus and Shadowcat (just reskinned wolverine and pretended kitty spent 10 years chainsmoking in vegas)