Yea i had some wierd parties that worked out great, but only on certain mobs.

Valkurm Beta:

5 WARs me 1 WHM, all they did was trade provokes...like WAR 1 provokes....loses hate and then WAR 2 will...and then WAR 3 will and alternate off that making it so i only cure so many WARs at one time. Kinda funny, wasnt fastest party but...it was actually soso.

Crawler's Nest:

MNK, MNK, WHM, SMN, BRD, RDM

Yea what a wierd combo..the lead MNK bought DEF gear and ate DEF food, and actually took the hate well with only provoke and WSs to take hate. It was still slower than the standard party, but it wasnt that bad either...i guess MNKs are capable of tanking, just certain mobs only. Love thier high HP now.