FBdred and RacrX.
They're not totally obnoxious, but I've never seen either of these guys simply play the game; they're always posting missions for base capture and begging people to join.
Sure, these guys like to post missions, but I've seen them just flying around having fun when they weren't in mission mode. And I don't really count guys who like to lead missions in the same boat as the guys who just like to tell everyone what to do in country channel.
Personally I like the missions. It adds variety to the game. And if the other side is doing missions, it's fun to try to figure out where they're going next and try to counter them. There's nothing funner than pwning an NOE 110 mission when you're in a Tempest or a Pony or something. Or watching a darbar start growing a whole sector behind the front line and know it
has to be some kind of mission, either heavy Ponies, or bombers, or something like that. So you immediately up some kind of faster and well-armed interceptor and go looking for it. Good stuff!