In Tony Hawk what settings and plugins are you using?
Mempaks are going to be worked on for B5.5.
The Deadzone feature modifies the XBOX_CONTROLLER_DEAD_ZONE raw value. It could be switched to a multiplier and act as a percentage, however 100% would be 32768 (the entire xbox controller range) and the percentage may not be what you assume it is. I agree it would be more user friendly, so I'll have it done.
The boxart are really .png's. We're just fooling the XXX GUI to render them with transparency. Any real cosmetic changes aren't likely as a new GUI is in the works, courtesy of Freakdave.
The Goldeneye multiplayer crash is a result of an audio buffer bug in UHLE. Freakdave has tried a few things with this but it seems to be rather tricky.
Perfect Dark on PJ64 for 128mb boxes is very puzzling to me. Since Ez0n3 reverted the rom paging method to the original method used in Surreal64 1.0, 128mb support dropped off. Unless I screwed something up while getting 128mb boxes to use the xxx method and overlooked it several times, I can't put my finger on it. There are still a few things I can try.