I think that the mechanic of the coustillier is interesting, there is a nice concept here with a micro rewarding unit or a possibility for a different kind of unit.
Now the charge is too strong and it doesn’t feel really all that good YET! I don’t believe we need to make it useless for it to exist in the game. So I will throw in a few coins here, may you hate it or love it. Give feedback, but there is no need to “This is broken, I don’t like it” kind of replies. These are all suggestions, they are only made to give ideas or new point of views.
Generally the damage needs a bit of a lowering. We want it to be a boost and have an impact ofc, but just insta sniping enemies doesn’t feel rewarding and it just feels like cheating.
1: Make them a little bit faster when fully recharged, perhaps with a unique running anim to make it very clear that charge is incoming. But after the charge, give them a slow until recharged again.
2: Recharge only when moving, forcing micro and moving around with the unit. Force the player to be active.
3: Instead of the 2nd suggestion. Have the unit “charge up” while moving but lose charge while standing still either rapidly or instantly (Perhaps after a second). Instead of just charging up and then staying charged.
There isn’t HUGE changes here, but perhaps something that fine tunes and not completely changes the concept of charge or unit.