I can't really comment too much either but I've seen soooo many tournament/ranbat matches (especially when I'm the one splitting the video) where the Tsubaki player is doing awesome as in getting in some charges, completing their combos and basically keeping up with the opponent, etc BUT her damage output is just so bad without charge that if they don't have any they still end up losing most of the time (and even if they do have charge they may still end up losing to other shenanigans), which is why it's so essential to have it.
The other thing I noticed is that her gauge is used quickly which is probably because of the different properties her moves do with a certain amount of charge and it's needed in certain combos so it's hard to save up. If charges are 70% of her arsenal that's kinda bad in the grand scheme of things haha.
Her character concept isn't bad they just flubbed it up this time around especially with her charging speed as SolxBaiken said earlier.
EDIT: Oh snapz just saw Ginseng's announcement .... And I won't be here. Dunno if that's a good thing or bad thing haha.