I'm not saying increase activity checks, just to preface this.

Again, the chance of that happening, of someone idling out of game without notifying the mods of anything being up, of their character being apped after that idle-out, of them then coming back with an explanation is low. And in that case, there can be room made for an AU if based alone on making people question Stacy, on one person having Stacy memories and the other not -- and again, this is highly unlikely to happen, yet can still be dealt with if it does.

Hence where I'm not sold on the particulars you've brought up, as they're so specific that planning the rule to be aware of those incredibly specific instances seems pointless, when someone in those circumstances would have to talk to the mods anyway.