I think the question is quite clear. it's bad enough I have to use greater teleport STILL in private instances, but to have no teleport area to one of THE most important parts of the high level adventure is adsurd!
If you do not want people to waste resources just running there and/or /deathing in taverns, it's time to add them to at least ONE of the teleport spells, or have a NPC that teleports you there if you have made the run before (like Tangleroot.)
And fix Greater Teleport already!
There, complaints done.