WAR is never going back to dmg or even atk power increases. Easiest way to balance a job is just to make it either 100% crit or dh to give the illusion of doing more damage when in reality its balanced. Also what you described was what IR used to be like at the start of 4.0. Berserk and IR were originally seperate with Berserk being a 20% atk power increase and IR just halving the costs of gauge spenders but that changed in 4.1 when ppl couldn't figure it out and ended up with 5 gauge at the end of it all.