The latest patch introduced a PvP challenge system which lets you invite people to your own custom PvP matches.
Click this link to see what the interface is like: http://i797.photobucket.com/albums/yy258/verdaan/Star%20Trek%20Online/challenge.png?t=1283612589
This means we can have practice PvP matches against each other to hone our skills, or just screw around (one VA ship vs. a bunch of runabouts maybe?) Or have all Science ships vs. Cruisers, etc. The possibilities are endless! This could make for some great RP, we can say it's happening on the Holodeck or something.