I kinda see where Consensys is going with some of their envisioning to be in parallel with parts of such an idea, with an integratability of apps - uPort's identity component a key foundation throughout an ecosystem of interoperable pieces...

I think both might be a semi-vague conceptual overview at this point, though you're definitely onto something here with the idea of a simplified UI that smoothens the workflow and processes of switching between and bridging blockchain-based apps... much to be expanded upon with this...