I recently picked up the Playstation Vita and I'm very impressed with it. It's like having a PS3 in the palm of your hand with all of its graphic capability and online functionality. However after extended usage I found some pretty big nuisances that keep it from being perfect (aside from the very obvious issues such as the DAMN PRICE OF THE MEMORY CARDS).
1. No "Create Playlist" function in the Music application
You would think in the day where the iPod Touch is the standard mp3 player and Sony having been in the music player industry longer than anyone would have this feature right off the bat. Guess not, and because of this I still take my iPod to work. It's also nice to note that the "Create Playlist" functionality is in Sony's Music Unlimited but you have to subscribe to their service first. What the fuck.
2. Cannot hide icons on home screen
Ok touch-screen enabled devices have been able to do this for years now. Why the hell can't I do this on PSV? I don't want to see Welcome Park anymore!
3. Content Manager is too much of a hassle
This is understandable but a pain if you do this a lot. The Content Manager isn't a complete application is just assigns folders that you specify to copy between each device. On the PSV you can specify what kind of stuff you want copied for both devices. It would be much easier to use a more full featured application on the PC side of things but at least it works and prevents rampant piracy that the PSP suffered.
4. The keyboard is a bit awkward
Generally most people hold the PSV with both hands so why not have a keyboard that accommodates for both thumbs instead of dedicating your index finger for typing. It makes for some really awkward hand positioning and extra strength being used to hold the PSV up while you type (it is light but that doesn't take away from the system being very wide).
5. Can't choose which music to disable
This is more of a personal preference but I really like the Home Menu music a lot. In fact I downloaded it, put it on my Vita, and played it while playing a game (there's an 'Inception' & Xzibit meme in there somewhere). So why can't I just disable the music that plays in Near or PSN? Those songs suck!
For the most part all of these nuisances can be fixed with an update but the first two are definitely standard in modern day multimedia devices, so why the hell aren't they there in the first place?