Bernie,
FYI, I was reading about an update to the Ranger mod that shows the professions 6 across instead of 5. This won't help with the other profession mods, which add a bunch more, so the 'hidden scroll' thing will still be an issue.
Your 'Wheel Selector' idea might work a little better. Or just smaller pics to represent the categories. Those five profession pics take up a LOT of valuable screen space.
I also take issue with the 'here's two Champions, pick one' thing, but that's a topic for another thread I think...
As to LightOfAbraxis's note, I too have run afoul of the new Sov creation interface. In the old days, we could add several different things to Sov creation, but now that the categories are 'hardcoded', you can't just add new categories and such.
As an example I have a 'selector' that I added to the Abilities in my own testing, which forces one choice out of multiple options (similar to the background thing on the first screen), but the only place I can really insert it is into abilities, with no header. Sooo, it isn't immediately obvious that the five options I made are a 'pick one' kinda thing, alongside the other abilities, which you can pick multiples of.
In the quest for simplification, I think that we lose a lot of capability in the process.