34 is Awareness, which is still really, really good to have for tanking.
Flash sux on Warrior/Overpower is better, esp after you get the god-tier Equilibrium ability, which is a 60s cooldown for either a 1200 potency self-heal (Defiance) or 200 TP (Deliverance). Also, iirc Flash generates much less aggro than Overpower as well, but its niche use is generating aggro when you're pacified; however, if you're going to lose aggro because you're pacified for 2 gcds, then you didn't generate enough aggro in the first place
I suppose it's not bad for doing tank swaps while pacified, but that only matters for extreme primals or raiding, and hopefully when that happens you have a bard that's conscious enough to use Warden's Paean when you press Berserk in the first place (provided you have a macro for it)
tldr warrior is super fun to level and play esp when you start getting those bigass fell cleave crits holy shit it's great
(fwiw I cross-class Internal Release, Awareness, Provoke, Convalescence, and Second Wind; SW is kinda meh, but free self-heal that can crit combined with the crit I gain from stacks of Abandon is better imo)
tldr part 2 I got forced into playing warrior as my role in statics; no regrets because warbear is gonna be awesome
(ps the dark knight mount is fucking shitty don't bother with it)