If all they nerf is flashbang you wont notice a shift in meta bc Big Boomer is just as good. Its a little less dominant in 1v1s vs warriors for sure, but in pretty much every non 1v1 situation its better, even. Explosive entrance damage (hits harder than Pulm LUL), might generation (pretty much exclusively wrt ECSU; nerfing HGH would be stupid), Flashbang, and crate should all be looked at. Nade damage maybe, but that should definitely come after the passive damage + modifiers are looked at.