After spending the last few hours browsing these and other PSP forums, it seems like an awful lot of people are wasting their time trying stuff that other people have already tried. It's not exactly easy to search forums for particular "ideas" since people will use different ways of describing similar ideas.
It occurred to me that some sort of a psp developers wiki might be a good way to get curious people (and potential helpers) up to speed.
It wouldn't have to be "open to the world", but if there was a repository like this then I imagine a lot of people could save themselves a lot of time.