I always admired Telvanni Great House, their outlook on life, their diplomacy, their desire for power and knowledge and their mushroom towers as a simbol of their culture.
Of course, I purchased Tel Galen tower. It looks nice, but I was bitterly disappointed by two severe flows.
First and foremost is that there is no any balcony or other place to view stunning nature of Vvardenfell from the top of the tower. It seems obvious to me that if you chose a tower instead of dugout, it is absolutely compulsory to have such viewpoint.
Secondly, as I remember from Morrowind, where should be something like small dungeon with fibers of mycelium and glowing crystals.
I would be happy if ZOS-architects will improve the tower with something like penthouse or balcony on the top of the tower wich is reachable through the master's appartments. A small dungeon is also desirable but not so crucial as a balcony.