I'm not generaly against this but I see an issue concerning the funding. The concept of self funding DACs through dilution somehow breaks. Because not every DAC (or in this case application in one DAC) is spending their own money but rather compete on some funding payed by the whole collective. E.g. if only few stake holders have interest in a voting application it is going to be virtually impossible for them to get funded. This would basically eliminate every smaller application integrated in this DAC which probably leads to stand-alone DACs for those applications anyways.
The solution is to rather than have new features start out on the superDAC, they can be seeded on their own blockchain, bootstrap a network of active users and fix/improve/perfect their unique DAC feature. Once their business model has been proven to be profitable, the main DAC can acquire the tech, userbase and off chain infrastructure through a one time market-cap-for-market-cap snapshot.
Makes sense, then again this complicates everything opposed to making the ecosystem simpler.
IMO it might be better to leave the DACs separate, implement ACCT and integrate everything into one client. This also doesn't take the opportunity from investors to decide in which application/DAC to invest.