A few tweaks, based on my own understanding:
- The Theban tribunal is actually pretty high vis (despite what HoH:MC says in the Bind Magical Creatures section of the Verditius chapter of Houses of Hermes: Mystery Cults - the main Theban book makes it clear it's plentiful).
- I wouldn't have said the Transylvanian tribunal has loads of politics, as such. In many ways, it has much less politics than other tribunals. What it will have, however, is people you have specific obligations to (which may well extend to flat out giving you orders, especially for Tremere PCs). To my mind, this is different from politics in that it's already clearly defined what the position is, rather than something the PCs are constantly having to deal and negotiate for. Depending on your point of view, this can either be a problem or a way to move your senior NPCs out of the covenant. Judging by what you were saying about the PCs being the ones to initiate contact, probably still not what you're looking for, though.
- The Normany tribunal being low divine interaction - I don't think there is much in the way of major divine politics going on, but divine auras are going to be problem - most of the tribunal is heavily populated, which means a lot of it is going to be covered in at least a weak aura. There are also lots of monasteries and pilgrimage routes.