I'd like to have it so "Mods" & "Super Mods" in my server can promote "Guests" up to normal "Members" and demote them back, but not allow "Super Mods" to demote/promote "Mods".
So I was think something like a rank_limit setting could be added....
This would be useful to a lot of admins. I will look into implementing this.
update: 5/20/2011
promote and demote limits are finished and will be available in the next release.