I wonder just who at Sony, or more specifically at the Sony Computer Entertainment division, thought: "you know, I wish I could use my PS3 controller to play games on my PSP." Whoever it was, they were high enough up in the company to get such an idea turned into reality and have it called PSP Plus.
The idea, crazy as it is, then, is that PS3 DualShock 3 controller can be used to control games, also enabling access not only to force feedback, but also to broader configuration options and control layouts. The downside, though, is that rather than simply plugging into the portable console directly, the PSP is connected via AV-out to a TV and then via USB to the PS3.
Not only that, but there is currently only one game set to be compatible with PSP Plus, Resistance: Retribution, and to use this control system gamers will need a copy of Resistance 2. Which begs the question, why would you play a PSP game on your TV when you could play a PS3 game instead? Clearly the latter will be an eminently better experience, no?
Yes, the PSP analogue stick could be improved, but this is not the way to do it.