Steve, you are now bordering on trolling. You are talking about a CentOS bug and then referring to losing Fedora users. Get your story straight. No project can magically fix issues without it getting reported with the specific details.
If popularity is the only argument for all the tired conversations, Windows must be fixing all their bugs to be so popular! Yes, Fedora does rely on its users to share some of the burden and I believe so does all Linux distributions. In this case, it is simple: You as a user report the SELinux bug you claim to run across and developers will fix it pretty quickly usually completely for free. Seems a fair deal to me. I am not going to install CentOS 4.7 to verify the bug you claim to exist.
A) Because I am not a CentOS user. I run Fedora on pretty much all my systems 24/7 and my primary system at the moment runs rawhide in part because I want to help fix bugs before it hits most users. That will help you, the CentOS user as well in the long run but not immediately.
B) The particular issue with printers is unlikely to be something I can verify easily considering that I don't have access to a printer at the moment.