I hope they streamline old content.

IMHO, if they want people to run old stuff in 3.0, nerfing it to easily PUG-able and adding cosmetic rewards along with excellent xp/leveling goodies would help.

Easing up on the locks and/or adding stuff to the DF automatically might help too. For example, I recently returned to the game after playing briefly at launch, and looking at what I need to do just to set foot into the new 2.5 raid, due to moving I probably won't get to it before 3.0 hits (unless it is launched in like June). And I don't think I'm gonna want to jump through all those hoops in 3.0 -- I'd rather be leveling an Au Ra Astrologian or something.