I like the XMB and I especially like the custom themes I have.
However, what it can really use is a revamp of the in-game XMB to make it more responsive. Oh, and custom soundtracks for all games would be great too because some music while playing a multiplayer game would be nice.
*edit* It could also use some general tweaks to make it easier to use. Things like multiple selections for backing up PS1/2/3 saves for example.







