Better media support, yes a CFW PSP can play more formats than stock FW and CFW PSPs had the ability to play music while playing games before Vita. CFW PSPs also had a "savestate" feature long before the Go. And lets not forget that (unfortunately or not) UMD ripping is possible. It won't be a stretch to see those being run on the Vita. So sadly, a feature Sony can't/won't provide will likely be made possible by a bunch of homebrewers.
Not trying to glorify the homebrew community, just saying that Sony could learn a thing or 2 from them and improve Vita's functionality. Already CFW PS3 users can play almost every PS3 game on their Vitas via remote play. Sony says they plan to improve the feature; hopefully they do.
You're right. I mean, the type of consumer to want to crack and homebrew a system to get it to do everything that they want it to is not the average-run-of-the-mill consumer. It's like the hardcore guys that crack PC games with draconian DRM, who want to be rid of the need for having a disk inserted, or talking to the DRM servers, etc.
But by including all these limitations on what the system can do, companies like Sony then stimulate these uber-users to crack the system and proove that the limitation in pointless, artificial, and stupid. Then they post the results of that effort on the internet, and a million other brainless scumbags are using that effort to just steal and play software without paying for it.
It's like pulling the "Other OS" feature from PS3. Did that make the PS3 platform more secure? Fuck no. It motivated the online posting of the PS3 rootkit. Half the people I knew who jailbroke their iPhone did so just so they could have custom images where Apple wasn't allowing them at the time.
So if they could just be a bit less restrictive about things, and give the uber-users the features they want, they would find their stuff cracked open far less fervently and quickly, IMO.
Me, I do my homebrewing with Photoshop.
The only temptation I have to Homebrew something is my Wii, so I can play Fatal Frame 4. Why? Because Nintendo is still region-locking their shit for some reason. Plus, even though there was a perfectly reasonable fan-made patch that had nothing to do with piracy, required the original, imported game to run, and did the amazing task of swapping in subtitled text for fan-made English translation on-the-fly during gameplay, Nintendo put out a system update that locked that down. Now you have to run homebrew to play that game.
And so I am pushed farther to the dark side, cracking my shit to get it to do what I want, even as I paid rightfully for the game I imported. Not a pirate, just a guy tired of the lock-down bullshit.