The hard-line Wikipedia deletionists should be deleted themselves. The argument is always brought up, like StackOverflow, that they have to be ruthless or it turns into an Eternal September dumping ground of garbage, but the quality is already very uneven and gatekeeping like Cerberus doesn't help further that goal. There's already a toxic Dead Sea effect where the pedantry and politicking has chased out a lot of people that would contribute; who the hell wants to bother putting in some hours writing something up if it is just going to be summarily deleted?
Bandwidth and hard drives are cheap.
Just spitballing, but it'd be nice if Wikipedia worked a little more like Linux distro repositories. Keep the tightly curated articles in a "core", but leave room for "community" or "nonfree" collections if you want to turn them on.