I think that changing feature sets now is almost certainly not on the table. I could be wrong, but I think they are more focused on finishing it. Just considering what happens with design work in my industry and trying to relate it to what is happening with the 997, they appear to be somewhere between the final push to get construction documents, the tail end of the bid period, or perhaps the actual construction process itself. Late design is perhaps the worst possible time to start making changes to building systems, second only to after design is done. The same is going to be true for development of something like the 997: beta testing is probably the worst time to start trying to add significant new features.