This build packs tons of single target and AoE damage, constant taunts, and team support through buffs/debuffs. Valiant Brawl, Willbreaker, and Shield Throw cover all your aggro needs. Counter Barrier gives you more survivability when you pop Devoted Sanctuary and soak damage for the team. Stunning Blow into Guillotine Blade and Strategic Rush into Death blow give you massive bursts of damage. Annihilation Slash gives you better AoE and damage, but can be replaced for Witty Strike in longer fights where MP management becomes an issue. You massively increase your team's damage through Willbreaker, Great Fury, and even Devoted Sanctuary so make sure to use them often.
If you need more survivability for your team, change Great Fury back to Stalwart Bastion. If you're at a boss, swap Annihilating Slash for Witty Strike.
You could go Perception instead of Dexterity for your second 30 stat. Dexterity helps with your evasion and damage output, whereas Perception helps your accuracy and landing your CC.
PROVOKE IS OVERRATED ON PVE BUILDS! No really. It just forces enemies to attack you for a limited amount of time. You know what else aggros enemies? Using your damaging abilities with +aggro specializations. There is no reason to take provoking roar when you can just smack them around and keep them on you. Cleaving Roar is decent but this build has too many slow charge attacks to keep it up on enemies with Spectrum of Agony.
