Expertise Cap & Trade-offs
Short question: Is it worth going for the Expertise Cap of 57 assuming you can maintain a respectable amount of other stats?
Additional question: What is a respectable amount of dodge/parry for an end-game DK tank?
Bonus question: Theoretically, which should create more TPS; gearing to max Expertise, or gearing to max RS procs (dodge/parry)?
Background on myself: I'm sitting at 39 Expertise (9.75%) unbuffed, 49 Expertise (12.25%) with Elixir/Food, and 293 hit (8.94% melee, 11.17% spell). I only have 1 Expertise gem (residual from pre soft-cap gemming) and +15 Expertise to bracers. I currently run about 23.70% (25.28%) dodge, 19.02 (19.45) parry, and 29516 (29826) armor. Horn buffed stats are in parentheses. I have 30129 (30643 with food) HP in my everyday tanking gear.
My goal is to put out the highest TPS I can, as survivability on anything outside of Sarth3D is trivial. I tank with Darkmoon: Greatness, and I am considering switching Monarch Crab with Grim Toll (and regemming the newly available +hit slots with stam).
Gearing a certain way is obviously subject to your spec and rotation. I use a heavy strike-based build; Obliterate, Frost Strike, BS, with 1 IT per 6 runes and HB when it is up. That being said, HB will be effectively relegated to only eating Rime procs when I aquire a Sigil of Awareness, thus upping the total number of strikes (additional Obliterate per rotation).
Obviously FS and RS cannot be blocked/dodged/parried, and I am spell capped (with SP/Moonkin) so IT and HB do not miss... which leaves BS and Obliterate to the mercy of the RNG gods.
Perhaps 49% raid-buffed expertise is overkill for 2 strikes, and the gem slot / bracer enchant are better used for the obvious (stamina) or the not so obvious (dodge, str, parry).
I guess the real question is: As a DK tank, does gemming for avoidance reward more TPS than trying to hit the Expertise cap, especially in a strike-heavy (low spell) build/rotation?
Thanks for your time.