The sprites would actually work better for you, unlike cvs esc characters that require smoother animations, mvc is so fast with the cancels and all you could easily make it work. If you could, an original boss character would be ideal for this sort of thing, if not you have a lot of options.
What’s your SP looking like? How will you fit all the characters is what I’m thinking. Of course I have to say it, another benefit of Ikemen is the infinite scrolling. Only suggest it as, if you plan to include mvc2 base roster plus all these extras you are going to have a giant select screen.
Here is something I’ve been looking at, obviously beyond face value, a select screen that utilizes scrolls not this exact look.
Spoiler, click to toggle visibiltyDoing something similar to you so I’m always looking for alternatives.