Hey Meiske, thanks for the suggestion!
At the moment, we have a developer that is working on an all-rounded PvP update for our Java network - exciting! We've looked at suggestions regarding the Wizard kit and we have decided to nerf it a bit, as well as adding a cool feature so that players playing with the Wizard kit aren't obliged to /kill when they've ran out of potions.
We've just gone through our first staff testing of this update this week and the support for it has been pretty positive - we still have a lot of changes for FFA, but we just wanted to let you know about our changes to the Wizard kit a bit more upfront.
Hope you're as excited for this update as we all are!