I've been doing some hardcore grinding lately between small parties (2-3 members), soloing, and full parties with behest, and there are often times when one has to take the time to disband a party in order to go into another one. Makes sense right?

The suggestion is to simply allow a party leader to invite another party into his own. This is very much like forming alliances in FFXI except it's putting everyone in one party. Admittedly this is sole for sake of convenience but it would allow things to run much smoother, especially for events like Behest.