Is it just me or are these ZONE_ things awful?  The TBA seems to have some scheme where the higher values mean it's more untouchable by a given level of player/immort.  I think we can definitely remove DIS_LIGHTNING through DIS_FLOOD.  Probably others too, though I don't have RavenMUD's code in front of me to verify what things like ZONE_PEACEFUL, ZONE_SLEEPTAG are for.

Maybe this should really be re-though and possibly taken back to TBA's options.