*nodnod* oh yes. Again, I think the fact that I am using hp_random as a base, and I know semi_auto_magic at least is acquainted with that comm and knows what I'm talking about, is misleading me into being less than clear. on hp_random, the fics/storylines/rp can arc from... Marauders? Pre-marauder era - down to, so far, 27 years past the Deathly Hallows epilogue; and that's just time-wise.
In terms of AUs, anything that strikes the fancy of the writers.

... one of these days when I am awake enough to make sure I'm clear, I'll compile all of this together as... FAQ? Guidelines? I still think it's more common sense than slap-down rules...