Where do you get 15% block?
I play BO with different pieces of gear in my bag as well as different set ups on Closet Goblin. That's why i like the spec i linked. It works for whatever i need to do. I find myself usually running these 3:
- SnB defensive: GWS, YSMBD, BB and Unstoppable Juggernaut. Defensive gear. I only play this way if i am solo tanking for a premade.
- SnB offensive (this is what i was thinking when i linked that spec): GS, SYG, YSMBD, BB. Offensive gear, good damage.
- 2H DPS: GS, SYG, BB and GaBC. I only use this if i am soloing and we lack DPS in a SC (but have several tanks/healers) or we lack DPS in our guild and I want to stay on the BO (else i would log a DPS).
I was a big fan of No Choppin Me! on live. But still need more points for that spec; i will certainly include it again in my spec once we get to rr60.
Renown points go like this:
http://waronlinebuilder.org/#renown;000 ... 1000000000
I was also a big fan of Weaponskill on live. However, we still don't see crazy armor values on RoR (and i don't have many renown points to spend on WS). I will still toy around with it in the future.
You are correct:
I don't crit all the time. Nor do i block all the time. But that's not my goal: I crit often and hard enough that my enemies notice it, and my groupmates definitely notice when i assist them. I block often enough that getting to M1 in 10 seconds is not rare (allowing me to Champ's challenge immediately). Best part is when i am focused and am forced to use my M2 Shield Wall: my morale fills up immediately allowing me to use Champ's Challenge or Distracting Bellow (or Deafening Bellow, which is my fav BO morale).
About Loudmouth: I used it all the time when soloing in the lakes on live (AAO, LM, GWS and SYG). That extra damage helped a lot in 1v1 (specially against Tanks). However there are better tactics for premade-play.
Speaking of 1v1, another gear-tactic setup i ran was built specially against SM's. If i saw one, I immediately swapped to that setup (replaced SYG with Don't Bother me none) and ran Da Greenest!, just to counter their double spirit debuffs. When fighting a SM, it wasn't rare to get to M3 and at this point you have to be super careful and watch if they use Bladeshield. If you hit them once or twice while they have that, you usually lose. Just kite them until it is over and then engage them again. Had a bazillion duels against Bladespawn and in the end (rr100) this was like the only way i could beat him.

Unfortunately i was never able to test it on Cythereaz, and the few times i ran into him in RvR he kicked my butt. I always wondered if it would have worked on him 2 (those 2 are the best SM's i found on WAR).