Worker Portal and Customised door access
Highlight: Allows worker creatures such as the imp to quickly travel from one section of your dungeon to another.
Associated Units: Workers
Appearance: Small 1x1 or 2x2 altar with a portal in the middle. Must be placed on an owned dungeon tile.
Teleport Worker: Portals would be built in pairs and would allow travel only between the two given points. Such portals cost a moderate amount of mana to sustain but also cost a small amount of mana when used.This should be costly enough to stop a keeper from building more than a couple of these rooms.
In the past separating creatures and dungeon sections had proven rather difficult as you would often need to manually restock relevant treasure rooms or open connecting doorways to allow workers access for traps created in the relevant workshops etc.
Maybe having the ability to allow only certain creature types to pass through certain doors (magic door or gargoyle esc bouncer).