Im sorry to say this but i agree that this will only change the meta, poko and karma will be replaced with other classes, fighter & SM are not needed with the damage that speed brings, and SK & DW aren´t too when ulti & cheff can tank (not talking about plasma).
To be honest, i haven´t changed my opinion since i first discovered speed that speed must be nerfed, it makes no sense that healer/tank/support classes make similar or sometimes even higher damage, only dps classes (wonder majin & humans) should do high damage so only tanks (dw & sk) should be able to tank, as only support (ultimate & cheff) can buff, thats the only way i see all classes can have a spot in PVE (except Poko, this guy really needs a complete rebalance to even have a chance without speed).