I love the idea.. i think we need such things now more than ever. maybe it's time to try to do a kickstarter-funded project.
It seems to me that the ideal type of project for that is:
* Web based
* Well thought through with a business model that works with AGPL
That just sort of seems like the perfect fit. Get from the community in order to give back to the community, but with the brains to keep the project/business funded/profitable and running, and thus ensure the future of it.