(I just know I'm gonna get flack for this…)
I actually think a “Buffy/GB” crossover would be quite interesting. Okay, granted, I wouldn't want to see Buffy wearing the suit and pack (though I think she could fill out the suit nicely), but to see Xander wearing it*, well, that'd be okay.
I think that during some of Giles's travels (in the “Gatekeeper Trilogy**” books written by Christopher Golden, Giles went to New York to attend a Librarian/Occult convention), he could have run into Egon or Ray. Or, since Egon returned to teaching (in EGB), he could have met Giles during some lecture tours. Either way, it'd work out.
Yep. Rather interesting.
–Cliff
*Xander makes a giant can of raid and fashions it into a pack and blaster, GB style! (BTVS #33, Dark Horse Comics)
**Boy, now that I think about it, that entire series had a ton and a half of GB references: the Gatekeeper, rain of toads and varoius other small animals, Springheel Jack (who seems to be kinda like Sam Hain), and the Minotaur, among others. I you get a chance, read the trilogy, even if you're not really a Buffy fan. You'll pick up on quite a few things.