Hi,
I just stumbled upon the site while googling for information on PSP minis. I really feel that Minis is the perfect format for hobbyist devs since it gives the absolute essentials (in my humble opinion)... 3D capability, PHYSICAL BUTTONS!!!, and all-around good design.
It's just that having to set up a corporation is a bit much for someone already content with his own profession. I wish there was a company out there who would listen to all the hobbyists who would have prototyped their games (say, in Unity3D or Unreal Development Kit since they're now free), then for some profit-sharing arrangment then ports the game as a PSP Mini. The company wouldn't run out of ideas, and the hobbyist game makers would have a corporate entity to break into the Playstation scene.