I actually enjoyed seeing Carlito back on WWE television. I hated this past weeks RAW aside from when Carlito interrupted Cena. If anything, the content of Carlito's promo are what sparked my interest.
The way he mentioned how a LOT of guys in the locker room are sick of Cena and all want their shot etc. and how even though those guys were desperate for Sheamus to beat Cena for the strap? I think that could be a good storyline. All the young guys (maybe just heels) could start a type of mutiny against Cena, as a way of expressing their frustration. In the process they throw a few up-and-comers against Cena which gives some of the 'future talent' an oppurtunity to show their worth and see if any of them can cut it.
Moreover, it will relate to some of the frustrations some WWE fans have with Cena constantly being in the limelight and It's also giving some of the young guys to get a type of push... It's just an idea, but I think perhaps as a short term storyline it could allow WWE to test the water with some of these guys and see how they fare in big match situations. As WWE have put Sheamus in a PPV main event, it does show they now seem to have grown some confidence to give something like this a go.
Putting focus back onto Carlito though, I think this guy maybe deserves another push, but a few tweaks need to be made which others have mentioned in this topic, his music for instance is one. However we all know this guy has a well documented bad attitude at times and has often been reported as lazy. So, giving Carlito another push (he has had a few oppurtunities to show his worth as it is...) is a risk, but Christ knows WWE are in dire need of taking a few fucking risks.