Make Sher'Tul Fortress Rooms Vaults

[San0ix]

So after dying more than I can count on the bosses that appear in the Farportal Room because teleportation is absolutely impossible (this also makes the boss before you unlock it, I forgot it's name, a lot harder for some classes), I though, maybe I can come up with a possible fix.
Since I don't really know a lot about ToME's engine I don't know if this is possible, but it would be awesome if you could make each Sher'Tul Fortress room it's own vault, using the current vault mechanics. That way, you can at least teleport in the room that you are currently in, making classes like Temporal Warden not super helpless in some situations.