I must admit.... I took a break from MJ/MC. Shortly after MC9 came out, I ditched the whole program for, hmm, Winamp I think it was. Then, a few weeks ago, I tried switching to MusicMatch. I was not all that happy with it, but I was interested when their store came out.
However, their store is strictly restricted (yeah, redundant) to their software, and the downloads can only be sorted in the library by their original tags (which cannot be changed).
I am now back to MC9.1, and I must say, the new interface with the PixOS skin is beautiful.
The one thing I am really hoping for is a player which will be able to play songs downloaded from online stores, as that seems to be the way of the future.
In their present state, the online music stores are not great. They all have somewhat-proprietary formats (except for BuyMusic.com, which the files will play in MC9). I'm hoping that in the future, all online stores will share some sort of universal secure format, perhaps AAC.
Finally, my one wish (not original): AAC support in MC.