In the warrior class hall there is an NPC that gives you options of where you want to teleport through where you jump into the middle. There’s also different spots where you can get beamed up into Skyhold. Is there anything or anyone in the warlock class hall that can teleport you to different regions or multiple spots where you can enter the class hall from?
As far as I know, no.
Most of the class halls are either only accessible from one portal, have a single physical location, or can be directly teleported to. Warriors are kinda unique with their jumping points.
I guess druids have multiple access points too but they’re spread out across the entire game.