The latest version has a HEN (home-brew enabler, no installation) and a LCFW (light custom-firmware), so you'd be able to connect to PSN. LCFWs however, aren't entirely permanent. You have to restore their state after a cold boot by launching a certain program that will "restore" the firmware...
The PSP will give you nearly perfect emulation for every Playstation game that doesn't require analog sticks (unless you have a PSP Go and a PS3 controller), access to cheap commercial games (if you have a UMD drive), and a large amount of homebrew.
Some random other bonuses:
The port of Cave...
Simply no. Maybe a clone, but then someone would have to code it, and that's entirely dependent on someone wanting to code it.
I believe AAAA will have a "Autism Mode" though, which would be something like Creative Mode.
I made two test MP3s, one that plays exclusively on the right channel and one exclusively on the left. Using these, I was able to confirm that this happens on my Wiz through both the speakers and the headphones.
Now I'm wondering if the Caanoo suffers from the same problem.
Yeah, actually charging it makes no difference. It looks like you sold your Wiz mostly out of fear, which sucks because it's a great handheld if you put in even just a tiny bit of effort to take care of it.
Nintendo didn't have anything to do with the commercial releases besides managing the platforms the game was released on. The Wiiware and Dsiware ports of the game were made by Nicalis, and the 3D remake is being developed by Nippon Ichi Software.