Yeah, if BB has one problem it is the Chaos Teams whose "strategy" is to maim as many of your players then win when the field is empty. The problem of course is that those maimed players are gone not only for that match but the next one.
No other teams than chaos has such a potential for hurting (due to the Claw mutation + either horns or STR4). I believe Chaos Teams should not choose their mutation and have a chance to have a mutation that hurt your player so it cannot be easily "maintained" high in the league.
Or removed alltogether.
There's been lots of suggestions. In the tabletop they effectively removed Piling On, but I think it's a misstep because the reality is Claw + Mightyblow alone is ridiculously powerful and trivializes many elements of the game. The way BB is balanced, most changes could be made through how much TV something costs or what skill access a piece has as it causes teams to start adjusting on a macro level. Altering RR costs particularly is a great way to do it, but to me Mutation access is so obscenely good I think it's crazy some teams can put together ClawPOMB for 60ktv, and in turn use that trivial investment to just wreak havoc on other teams.
However, GamesWorkshop has almost no interest in actually balancing the game. In fact, one of the changes they made was to give Gutter Runners the ability to RR injury dice or something; the 'Weeping Daggers' skill or some shit. They've no idea what the fuck they're doing