There need to be more gold sinks added in Cata. At the moment the only real gold sink is the Alchemy mount at around 32k. Once you have that there is just nothing left to spend gold on. I have all the BoE's epics i need. Gear is enchanted with best enchants. I don't do alts. I have 310% flying and maxed professions. All the available BoE companions and mounts. 2 old legendary's which cost a lot to craft. I'm generous with donations to my guild bank and helping out long term friends and yet i have all this gold with nothing to spend it on.
In Wrath 3.02 we had:
Tundra Mammoth 16-20k
Sons Of Hodir Mammoth 8-10k
Chopper 13-15k
Ring Of Kirin Tor 7-8k (i think it was)
So it was more expensive to get all the gold sinks in Wrath than in Cata despite gold being acquired at around double the rate as before.
Personally i would like to see the Engineering flying mount be made BoE (afterall they changed the old engineering companions from BoP to BoE). Also the Tailoring flying carpets. I'm sure both those professions would rather have something they can sell than something they can't. What i would really like to see is all TCG vanity items such as the mounts and pets be made available to buy with in game gold seeing as TCG is obsolete now. A pet for 10k? Np. A mount for 30k? Yes please!