So for the first part, it has mostly already been done by one modder Remy2FANG who added Chun-li and AKI as more or less playable characters into World Tour mode, but I would like to see this done with most if not all of the characters since you can then edit a unique moveset onto them.
The second part however, I know cannot be used online, but I want the restrictions lifted on what I can slot in for my special moves, specifically how I can't use quarter-circle forward punch AND kick and DP input punch and kick and so forth. Lifting these restrictions would more or less allow anyone to re-create any characters moveset onto the avatars with a few additions...