I mean I know I'm harping a lot on KI recently, but have you seen Shin Hisako?
She has rekkas (with a low and an overhead option), an overhead that can come at you from a screen away and can also be cancelled from a low, a wall jump, a command grab, a Guile v-skill esque fireball (she throws out a ball, and hits it to create a slow moving projectile), a forward lunge that side switches and hits you after the side switch meaning it crosses up, a DP and an Instinct mode that creates a hole in the stage that slowly moves towards you and if you land on it, it does like 20% damage and if you don't, you're so scared that she gets whatever set up she wants.
And because that just wasn't enough, Nash's V-Trigger is literally a special for her where she can teleport behind the opponent or in front of the opponent in the air.
Yet she still does not feel broken or like she just has too many tools. Literally every character HAS THE TOOLS to deal with this kind of offense and pressure.
If a game with as much bullshit as KI can have such stuff and still feel completely fair, I don't think that it's too tough for SF5 to accomplish something similar.