With the up and coming expansion patch, and hopefully meaningful team PvP (land control) it would be nice if there was a new line of nano's for all professions, i.e team debuff's (other than the AE roots and maybe others i haven't played every profession).
I think these would have to be toned down versions of existing debuffs for each profession. Some examples of how existing nano lines could be implented in team pvp
Trader - A ransack/deprive which drains an enemy team and increases the strength of there own.
Doc - Team Init debuff perhaps, or team DOT nano's
MP - Team nano shutdown (ok thats way too powerful but i play an MP)
I'm no expert at PvP, nor do i pretend to be. I have no interest in duelling, titles or the like; however land control does appeal to me. Perhaps such things exist already but if not, any addition to the game is welcome.