There's a lot of content out there made with flash, especially games.
A sandboxed player application would go a long way toward the uses mentioned in this thread, no? I wonder when we'll start seeing Flash emulators being developed to play back all that old content.
Things like Mono took a decade to finish as an exact clone of a portion of Microsoft's implementation, and that was only possible because the people using it (the target audience begin linux programmers) could fix the code as needed. Flash's target audience is artists.