I'd just like to pop in and say that for a buff, non super move, the drawbacks need to be on par with/ slightly worse than the benefits that it is providing. All Might had a normal move buff approved a while ago that increased stats without needing to spend SP. The Appropriate downsides were that he also lost that amount of stats and suffered fatigue and pain for an hour afterwards. I spoke with Greg about this when All Might was trying to get the move approved and he thought this was appropriate downsides. Viola is doing so much more than even a t1 super move would be able to do and only for fatigue costs?
No.
No.