The most amount of complaints I have heard, are for the Knight, Pyronaut/Pyronaught, Titan, and Emperor Overpowered.
Titan, I am still trying to find a weapon for him to use.
Pyro, VCE boss= His only attack is holding right click? Seriously, every boss needs more than one attack, and giving him jets just made him more annoying as a boss. (How is he even a boss?)
Emperor Overpowered, Chidori + double jump, maybe if the Chidori was nerfed just a little in damage...
Knight, his fire arrow takes some time to charge, but I am not sure about the damage, it seems to be fine.
Shock is another, his only attack is the Shockwave, you might hit someone with that wind magic, but not without getting shot all over the place.
Zeus needs a change, try to kill the turret with his slow speed. For some reason, I just witnessed, Zeus, trying to use Magic - Light, could not harm the turret user. While he could have used Magic - Lighting, I do not think that would have worked, testing will come tomorrow if I have the time. I will try to find what players are saying here, so any more feedback would be helpful.
Also, we need some ideas for a class to replace Pioneer. I believe a new jets class will come soon.