Note that higher hit rating means:
1. MORE RAGE!
2. More possible critical hits due to how the meele mechanics works. Without hit and expertise crit cap is somewhere around 26% (if you include all possible +crit and +agi buffs from raid and elixirs) and increasing it more than it has no effect on raid DPS.
Your maximum hit cap is 24%, 21% with 3/3 Precision. Without it misses will occur, and every miss make me go in flames (no rage again).