Don't forget to Thunderclap every cool down. Now that it scales with AP it does quite a bit of damage. Also,the four target cap has been removed so it will hit every mob that's in range. Rage generally isn't an issue anymore if you have more than one mob beating on you.

edit: Ever since the 3.0 patch I find that I suddenly have too many buttons to press on my warrior, but the fact that prot tanking is a blast more than makes up it.