If every prof is getting their stat perk removed, I'm pretty confident bliz wouldnt allow people to be pidgeon holed into engineering for nitro boosts. They will most likely heavily nerf them, such as 50+% failure, or not allowed in combat, or flat out removed. It wouldnt be fair to the other 10 profs to have no combat boost and engi retains its OP sprint. It would become mandatory in raiding..
LFM flex WoD raid, must have 675 engineering or no invite.