We have seen these characters in action... it's a copy/pasta job.You keep saying Reused assets, sure the models are probably from MvC3 but why is exactly is that a bad thing? these guys will most likely have new moves, reworked moves, changed hitboxes and speeds and specials, thats not exactly something that can be done lazily.
Like legit taking the same animations of normals, specials and hypers from Marvel 3 and putting it in Marvel Infinite. Some of them have new moves though but like... if you updated UMVC3 that's what you would get too... same characters with balanced moves and some new moves/mechanics.
In the reports, some characters have less moves than before like Chris.