I have a different conceptual roadmap. What's more feasible and even more desirable is to push the frontier in the direction of a complete re-imagination of money and banking system. To do that we need a careful examination of all the functions that banking system have advanced since the birth of the modern banking system and to see How a decentralized framework can better them in efficiency and transparency. These are the works I have been doing (conceptualization) and imo that would make NEM distinct from all other competitors and projects. I can't go into more details but here are some areas that I hope NEM would pioneer: re-imagining personal loan, re-imagining FICO, re-imagining social lending etc.
I like your ambitious plan for NEM. I can see NEM emulating any financial product. A NEM savings function where you can withdraw after a deposit amount has been reached or after x amount of time has passed. A NEM pension function where a account release x percentage every x months to another address. A NEM Inheritance function that can send to a failsafe address after x amount of account inactivity. Annuities, escrow services, assurance contracts, with NEM all these things should be possible.