Apologies for the slow response and let me come back to you, @bochaco, re the suggestion of incorporating this into a CEP. We need to write this up as a set of requirements and post it, enabling others to also contribute to both the requirements and also to submit their own development proposals. Just in case you missed it, the CEP process is defined here. I personally use Dashlane at the moment so definitely see a value in these types of services.
Edited to update CEP link