There probably is a missunderstanding. Rage has several meanings. It does not always mean that you are furious and run amok. Being Enraged normally just means, that you are really angry and therefore hit harder than usual, but you also act more careless and disregard your defence.
But if I think about, it does not do what it's meaning would suggest. Critical hits are normally well aimed hit on vital spots, if you are raging you will hit harder but will hardly aim better. In the concept of rage you would increase your damage and get a chance to break blocks (wich is sadly not possible anyway in D:OS2) so far. Perhaps your hit chance increases but your crit chance would decrease. Also dodge, parry and block (if those would exist) would be reduced, so that the enemies can hit you harder. (Reducing elemental resists made never really sense and guaranteed crits neither.)
It should be kind of like it was in D:OS1: +50% damage, +4% crit, -25% hit chance
But at the current limited battle system is would just turn out to be just different kind of flesh sacfrice and therefore could yield still unhealthy synergy for elves.
