As we have said several times now, there are zero players outside of these halls doing Cataclysm raids yet, and the high level PvP is just starting to get there. If we were certain warriors would never, ever get into a state where they couldn’t spend rage fast enough with Heroic Strike alone, then Inner Rage might be a lot less important. We’re just not convinced that is the case yet, nor do we think any amount of theorycrafting can prove that is the case without actual first-hand experience.

If normalization and the new HS model have fixed the problem forever, then awesome. It’s just too early to know that. (Source)