Okay, well, maybe it'd be a good idea to ask that the age of onset be moved up. Not that adults aren't dicks, but that way you could invite people into a community and prepare them for it before they go off- make it harder to access, or more dependent on you not being a shitty person.

Like a proactive step rather than a fuzzy outcome. Hell, even if you left it to his prescient judgement- 'please do something to make this more likely to be good,' there'd be less reality-ripping lag, or whatever.