Yes I find I have a shitton of utility buttons for my rets, need a keymap for my keyboard really. I think what you need to do is focus on whats important.
1. DPSing, probably need a seperate key for DS
2. Healing
3. Blessing of Freedom RR'd on main
4. Divine Shield on all
5. Divine Protection on all
6. Ret stun RR'd
7. Stun RR'd

and then just control the DK manually.