Not a Hilde main, but I would be okay with that change. The whole charge mechanic is why I could never get used to playing as her.My most controversial opinion about Hilde is that I want Project Soul to ditch her charge up mechanic for her moves and give her proper stances instead. An interesting experiment for sure but I don't think it works in this series at all, though I'm sure some Hilde mains will highly disagree with me on this point.
I'm curious if people who play as Hilde see that as an important pillar to her gameplay or if they'd be okay with that getting changed. If I recall, in SC4 you could kinda cheese her by mapping A to two buttons so you could charge A while doing A attacks. I can't remember if they fixed that in 5.