Not saying there aren't things to do, especially if you haven't played as much/long and/or go into obsessive collector mode.
Personally though, I kinda ran out of stuff, at least for the moment. I'm not a huge mount collector, though I have 50+ and quite a few rare ones at that. I'm not really a pet collector at all, though I could see that changing somewhat with Pet Battles if they prove to be entertaining/addicting.
I am an achievement whore, but I already accomplished some major milestones during Cataclysm. Exalted, The Seeker, Over 9000 - to name a few. The things I have left are much more grindy or require more coordinated efforts, and while they could occupy me awhile, I'd rather have them as options to go back to during downtime, rather than as primary content, when I have other reasons to be playing.
Loremaster is there as another milestone, but with what I have left, just doing that would only take a week or two tops.
Speaking of long, grindy things to do - I really wish they introduced something new to replace the epic scope of the Scepter of the Shifting Sands quest(s). I only finished part of it, though I still have the now near priceless
Chimaerok Chops recipe in my bank. Never decided whether to learn it or save the recipe to sell for ludicrous amounts of gold.
Did help a friend/guildmate finish the Scepter questline during Wrath and it was quite an adventure. That guy is pretty insane though as he has/had nearly every pet in the game (Tyrael, Original CE, etc.) and I think every TCG item, including the Spectral Tiger. He was always a bit jealous of my Zulian Tiger though as he never acquired one of those.