I admit I have not taken a look at the 3e Roman tribunal book mostly because I heard It was littered with demons and not that accurate. That being said from what I’ve seen of 5e material that mentions the Roman Tribunal the area seems to be extremely poor. The divine auras have grown to a point they stamped out most of the magic and faerie auras leaving the land lacking in typical hermetic resources like vis and magical creatures. So I have to ask why would a magus want to live in a land that hampers his magic and limits his resources? How does this area have 3 domus and why hasn’t everyone left for greener pastures?
Also second but totally unrelated question. Seeing as how in 5e the hermetic landscape seems to mimic the mundane I’m wondering if a sort of hermetic senate would be a viable way to govern that wouldn’t violate the code? Say a representative from each covenant was chosen every seven years and given the voting sigils of the each magus that belongs to the covenant. It’s this representative that votes on matters in the tribunals rather than everyone getting a say sort of like the tremere but voluntary and a much bigger scale.