Instance/Dungeon Pairing

I've found it quite bothersome that instance/dungeon pairing is a cross-world function, yet friend requests and player-to-player communication is not.

Being paired with players on your own server is even less common than being paired with good players. It would be nice to have the ability to communicate with and/or send friend requests to players whom you encounter in instances/dungeons.

Has anyone else thought: "Finally a decent {insert job/class here}!" only to discover that you can't join up with that person again because they're in a different world?

Frustrating huh.

be nice if the implemented a social feature, give an example, in WOW, yes its wow, put up with it, the way they get around this issue is with battle.net, now you can use your actual name etc.. or use the battletag, basically, "username""numbers", and you can still talk or party up with people from other servers without spilling personal info, you just rightclick, add to battle.net friends, something similar can be used here, some cases ive gotten along with some tanks or others really well and the group had a blast, just a shame we cant do the instances another time, it helps bridge the servers