It doesn't matter what you think might happen. What BlockShareholders decide to do with their own dev funds is completely up to them. If they do receive the dev funds back, then I don't seen any reason why they would need to be sent to another DAO.
B&C will continue being B&C, but have the money to finish development and Augeas will most likely end up being a replacement for Nu. If B&C doesn't get the funds back, then the network may end up getting abandoned by shareholders like Nu.