LFD/LFR & CRZ have been handy in their own way, but I can't help feeling things are a little too convenient now. And I think most would agree that no one ever talks to each other in dungeons any more, that you never seem to group with the same people twice. Done & gone.
There's a lot of old content I breezed through, a lot of quests I never read, a lot of dungeons I ran where I had no idea what the "story" was behind them. I'd like to go back and do some of those over again.
Here's what I'm thinking. Horde or Alliance, doesn't matter (though I'm a little more partial to Horde), we get at least 5 of us and roll up 1st level characters. We get to 15 on our own, do whatever professions or quests interest you, then - at least once a week - we physically meet at an inn or tavern, swap stories, then physically go to the dungeon we're going to run. We don't dash through it, we're in no hurry. If there are quests, we do them. If there are multiple bosses, we kill them all. If we don't have all 5 of us one night, we try it with who we've got.
Maybe we start our own little guild with these alts, maybe we don't. Maybe we allow heirlooms, maybe we do it the old-fashioned way, from scratch on our own. Depends what everyone else wants to do. Having our own guild seems like a good idea because we can set our dungeon schedule on the calendar - you know around what level you have to be at and by when; if you're falling behind you hustle and catch up, if you're pulling too far ahead, you take a break (go level up some Cooking or Fishing or whatever instead).
There's a lot of possibilities here. RP & dungeons would be our core, but we could switch things up, do quests or run battlegrounds (physically walking/riding/flying to the bg enterance) if there's interest. We could be a themed-guild (all one race, for example, or all Druids or all Monks, whatever) or just have a loose RP connection.
If this is something you want to try, post here. Let's see if we can get 4 or 5 interested folks. Let's figure out what we want to do, what kind of group or guild or theme we want, and set that first dungeon run night.