If you're gonna do that, then give tails brand new looking animations and a new model (pretty much new everything) so he'll fit in well with the cast and will look polished(he looks very unpolished).
And giving sonic a overpowered side b from a horrible psa?
Why?
It's better to not change sonic up and keep him the same from brawl so he'll fit in well.
If you are gonna give him a side b boost, then don't give it such a [censored]ty recovery, make it like fox's, on ground he should have a cool down time at the end of the boost.
I'm just suggesting some ideas so you can make a better psa.
you can take those ideas and shove them up your rear end. there is a difference between "ideas" and "let me criticize a psa"