SiO isn't enough.

[MauvaisOeil]

Of course its worth 50 gauge. FC is always worth it (after upheaval). SE did a pretty good job streamlining the gauges to not have competing interests. The only thing you can spend gauge on is damage actions. If you had to choose between 50 gauge for vengeance or 50 gauge for FC then you could say 'FC isn't worth 50 gauge'. But the onl ything you can spend gauge on is damage. Just like Pld's is choosing defense or defense. No competing interest. Drks is damage now or (more) damage later on a 2min CD. How is using energy (gauge) to do damage 'not worth it' when the gauge's entire purpose is a battery that gives damage? That's just silly.

War certainly doesnt need MOAR damage. Changing the distribution of damage is an aesthetic preference. Some people like building up the rage beast until you can no longer contain it then blowing your inner release load all over things faces. Some don't. That's just a preference, not a balance issue. Balance wise war certainly does not need MOAR damage. Not liking how it actually does its very good damage is just an opinion. But it fits the characterization of war, so Id rather it stay than go. If you want a different play experience that's why there are different jobs with different characterization.

The ramp up is tremendous now compared to HW. Since you can hold gauge up to 100, you can "almost never" FC before the Zerk button comes off. The gauge thing is a double edged sword. On a side, you can keep and spend witouth worrying because you can actually store more than one FC, but on the other side, since you have powerfull buffs exploiting this store, you cannot really do something else than storing it because, using it outside of the zerk / zerk-ir window is a bad employment of beast gauge.

That's one of my regrets about the beast gauge extension. While I would have loved during HW a way to delay my FC usage withouth wasting abandon stacks, it endend I can only lock my FC usage now, until my main cooldowns are back.

On this specific issue, the NIN gauge is fairly best designed. Since you can store a bit, but only 25% of what a spender would cost you, pooling is impossible but delaying by a couple GCD is. (However, the nin gauge fall on the one skill every 30s rule of doom, for optimisation purposes).