"The dustbin of D&D history"?
Are there any editions not in there? I'm pretty sure every edition will still be being played ten or twenty years from now, and none of the current editions will still be considered "current" by WotC (certainly twenty years, but I'd be surprised if WotC stretched 5E to ten years, myself). Unless there's some huge secret OSR community who don't post on the internet (which seems unlikely), BD&D, 1E, 2E and their OSR clones are each and together less popular than either 3.XE/PF or 4E, in terms of actually being run, based on the last surveys I've seen.
(A complicating factor is OSR non-clone stuff like DCC and ACKS, but I'm not sure on the popularity levels of that, as well as D&D-like stuff like 13th Age)
If you think 6E is going to resemble your personal preferences any more than 5E does, I'd be very interested to hear your reasoning.