It would be nice if someone could come up with some simple code to deal with this, that could be presented to the devs. _condition and condition_value already deal with this, and there is some code made out to this:
http://eqemulator.net/forums/showthread.php?t=18171
I doesn't appear to work right with me, or maybe I'm trying to get it to do what it was not intended to do.
Something that would change values in the above tables and repop in a timely manner would be enough.
I miss the "witching hours" at night in Lake Rathe and just trying to get out of Kithicor before the zombies came out. Also, things like night time in South Karana when the Sentry Alechin turned into a Werewolf. Hope to one day get all that back again.