As far as I understand it the idea is not to create new user software, but to provide a 'meta' platform on which others can build GTD software, but making sure that it is integrated via this platform. I think this coming from David Allen Company would give it some chance of success.
Very true - and I didn't mean to sound flippant. It will definitely be a great advance, given that it's coming from DAC. Quality and integrity will be paramount, I'm sure.