Acc rings, kabobs, feint.

MDR is a off tank class, aswell as mild DD. I have LNC and GLD 8-9 levels below my MDR (which is my main) to keep a nice variety of moves I can use.

Warmonger, Taunt, Provoke are all vitally important imo. I generally don't ever run out of TP and just spam skull sunder (if the mob requires it), popping feint whenever I miss.

Don't forget foresight, pop it before you provoke, generally i find 7/10 times the I can pop Fracture the second a mob turns its attention to me (and get's parried).

I used to have LNC as my main but switched to MDR over a broader variety of moves, survivability and generally more awesome moves, even the default critical hit animation for MDR looks more aggressive/painful than the lnc's poncy poke.