Re: End game...is it the end for some?
FWIW, my build is primarily for tanking and raids. That's why I have the talent to give me extra rage on enrage. I do not shift much.
Shredding Attacks is only good for grouping. Shred is pretty much a boss fight skill and Lacerate is for tanking only, unless you need to throw a quick bleed on in PvP.
The stun would be better for PvP. It used to be more worthwhile, because at 60, I think you needed the extra second to get off a heal if you shifted back to caster. It's been a while since I have been 60, so I may be wrong.