One thing I’d really like to see is online rooms, similar to the ones used in SSFT2 HDR. It was a great feature that allowed me to play against my friend and also watch my friend play other people. The rooms created a timely and organized rotation.
Also, re-picking your character before every match prevented counter picking, but also allowed you to focus on one character if you wanted to hone your skills. I really liked the Street Fighter HDR online king of the room setup