This is what I was thinking. Fluid UI is a nice-to-have. Sure it has value, but unless the UI is the product, the core functionality is always going to be a hig

This is what I was thinking. Fluid UI is a nice-to-have. Sure it has value, but unless the UI is the product, the core functionality is always going to be a higher priority. That said, good UX is not something that can simply be bolted on after those core functions are tweaked. The application flow should be part of the early designs, with the intention to add the UX perfections in a subsequent iteration. The hard part is deciding when it is good enough for release.