I voted “Needs more discussion” because honestly I think it’s really only the speed that needs any tweaking. When speed is that important in the game, and the speed can run completely off the rails if someone pumps enough boosts in, it should be handled more delicately. I think considering the rock-paper-scissors type of setup they’ve decided to go for it would make more sense to have speed boosts reduced to 1 so that you CAN get a Fierce up to Raptor/Ostrich levels - but you wouldn’t be able to surpass them. That way, Fierces with speed boosts could outrun tanks, compete with each other, and only beat the speedsters that were unboosted. It also meant that speed would still matter to the Cunnings because they were the only class that could reach the higher speeds but as they tend to lean towards lower health pools with high damage output it would matter which of them could overpower the other.
Conversely, boost cap lower level arenas so you don’t have the most ridiculous unwinnable match-ups before the bulk of the opposition is ready to field some of their own.