Football uniforms are usually tight-fitting, so I don't know why EA would take the time to implement tech to make jerseys move and flow. This is more important in a sport like basketball where the uniforms are worn loose.

With the implementation of Pro-Tak this year, your concern of not enough variety in tackles has already been addressed.

A move to Euphoria would take years of work and tweaking for the dev team to get right... I'd rather them work on perfecting what they have than start all over on something new, especially right in the middle of this generation of consoles.