It depends....demand is going to be driven by a lot of the usual factors - location, aesthetics, supply, condo fees, etc.
The lack of condo fees is going to be great in the early years of your condo and demand / interest for this no fee situation will increase (as it did for you). However, as time goes on - some of the things that would work great if done in an organized fashion - can get shoddy if one side decides to replace the roof, and the other side doesn't. Or if one unit wants a blue color scheme and the other side wants brown, like in this example:
https://www.google.com/maps/@51.1289...7i13312!8i6656
(for the record I think this example looks OK, but I've seen examples that were just plain terrible)