What if there was a cryptocurrency that gave every participant a vote on the usage of a portion of the funds? Directly linking a member's participation in a fund with the projects within their community. Each member would have a single vote. Theoretically this could act similar to an infrastructure bank but not limited to a certain type of project.
There are obvious issues with this idea: Does the amount of money required to initiate the fund prevent it from being viable? Will members from outside a given community attempt to "steal" its' funds? How could the identity of a member be authenticated without being intrusive? Are people truly interested in improving their community?