yup, exactly what I meant. A 120 speed delia without bad balance would be a monster, whereas an arisha or kai at 120 speed wouldn't be as powerful because they are still limited by cooldowns and mana. Thus it ruins the character balance.
That makes no sense, as Delia is a VERY SLOW character by default, which means she's completely useless until later in the game when 90+ atk speed makes her even somewhat capable of dealing combos.
High attack speed on Delia and other slow characters isn't overpowered; it's just the bare minimum speed she needs to do anything.
And even if attack speed happened to create an unfair advantage without Balance on some characters, the devs just have to change values on those characters to balance it. It's literally just changing the values in their formulas.