The SAM tanking thread has inspired me to get the thinking cap on with out-of-the-box ideas. I was contemplating posting this under the SAM tanking thread, but this really has nothing to do with SAM tanking. (Reason I contemplated posting this under there is because I didn't know if this idea deserves it's own thread).
Anyway, here goes.
Note* This isn't my idea, but would be Yobun's out of ClanBEB from Lakshmi.
Original Post on BEB
How about this: PLD main healer. PLD can get a sickeningly large amount of MP regen/tick.
Auto Refresh Gear:
+1 Auto Refresh
+1 Parade Gorget
+1 Vermillion Cloak
+1 Sanction
+3 Ballad/Evokers (Discontinue the refresh from RDM, because if you had one, you wouldn't need PLD to main heal anyway)
And you can get +2 from Juice (If you feel like carrying them around.)
In total, that gives you +7/tick (9 with juice). Also, PLD can get +20% Cure potency with Apollo's and Hospitaler earring.
Now, for HMP:
+10 Dark Staff
+2 Relaxing earring
+1 Antivenom earring
+2 Hiearch Belt
+4 Lord's Sabatons
+1 Invigorating Cape
(+4 from Vermillion Cloak/Parade Gorget/Auto Refresh/Sanction)
+5 Ginger Cookie
Giving a total of +29 HMP
Now, this is theory only, as I've never actually seen a PLD/WHM main heal. But, the facts are there. I don't see how this wouldn't work with that much MP return.
Edit: Implemented original link