I don't know if it has been mentioned here or not, but going with a simple devastate rotation is probably best. Yes you can open up with Shield block, Shield Slam, TC and SW for AoE and cleave, but for single targets just devastate and SS when the proc goes off. With the right gear devastate does enough dps and threat to keep you well ahead on threat.

On my warrior tank I normally charge in, SB, SM, and devastate on single mobs, or charge, TC, Demo shout, SW and tab-cleave for AoE. I only use revenge on low rage situations. Hope that helps those working out their rotations.