I really feel like they shouldn't do anything to the balancing until people have had a chance to play as and against both sides a fair bit. Way too often we see people jumping into games with no idea what they're doing, getting beaten by an opponent who does, then immediately blaming the balancing rather than the fact that they weren't doing any of the things they were supposed to be doing.
In this case the matches where the Predator has just jumped down and melee'd everyone down in five minutes have all been because everyone was splitting up and nobody was shooting at him. So they complain the Predator is OP. Then they play as the Predator, try the same thing against a team that is working together well, get destroyed, then complain that the Predator is actually too weak.
And equally too often the devs listen to these people and nerf one thing or another into the ground in order to satisfy people who are just bad at the game, and make things worse for everyone else.