It's a while I have this idea in mind, to final users the difference between a theme and a variant may be difficult to grasp (and probably not even relevant).
So, what do you think if in the profile variants are listed the same as a "real" theme instead of a small dropdownnot even very wel visible?
Of course this would be just a cosmetic change not even in the admin panel, only in the profile.
Sounds good to me. Users don't need to know about how something looks on the backend.
Can't see anything wrong with that. Only possible problem, which is not likely to be significant in practice, is that the page could get rather long if someone is running a lot of variants.