I'm not sure a single forum for all stickies would work too well. Reasons are:
1. They wouldn't be very organized. One could get nude nala, the drudge thread, Doom 3 benchmark thread, and what music are you listening too (that one might have been removed from being a sticky though) all lumped together
2. If every thread in a single forum is a sticky, then none mise well be. Reason is, stickeys stay at the top relative to which one was posted in last. If they're all sticky, there's no difference between that and regular forum threads.
It's sort of like with adding emphasis in text. If one were to bold and underline every single word
in a document, then it would be as if nothing was emphasized at all