Call me optimistic, but I think the 12 hour notice was more than enough for most people's tastes. Between the 12 hour notice, /g/ archival, mass 4chan/2ch individual user archival, the torrenting options on ex/e-hentai, and the Streisand effect, the content that most people wanted, and even my favorite hairy armpit Galaxy Fight doujin I forgot to archive because it was bundled with Cham-Cham molestation isn't 100% dead.
The ideals of people saving everything before it gets removed from the internet is what lives on, and redistribution in the wake of this mass deletion will be coming when the inevitable "next exhentai" gets made and managed by someone without tendonitis and an idea about exit strategies. Still, this is a wakeup call for the anons who like taboo shit, and not even loli/shota; stuff like incest, bestiality and guro doujins as well. Save early, save often, like it's an old Sierra game. This precedent is bad, and will get worse before it gets better.