Ditto to all the thoughts previously mentioned. Frankly, it seems like there's less about Richard out there than there is the other performers. I guess that's because Jim was well documented even before his passing, while the rest of the main performers survived to the internet age and have been interviewed by fan sites.
Another thing I'd be interested in is more insight into some of the showbiz stories I've heard about Richard. The Sex Pistols meeting comes to mind, as does his relationship with Mark Hamill, which I had no idea about until Hamill tweeted about it a couple of months ago.