People also have to keep in mind that this is the MELEE of the subclass. If u get up close in a melee fight, ur done. The other guy would have a melee that does significant damage and also some kind of other ability. The only thing smoke would do at this point would put some gunk on the other persons screen. They would still be able to melee. This why smoke is balanced. There's a trade off, especially in the perk tree