A Vanilla Forums plugin that can link to a Nationbuilder website via the Nationbuilder API, match user accounts by email address and determine if that Nationbuilder/Vanilla Forums user is a current paid member. If that user is a current paid member, that account would be activated and allowed to post and view the forums. This script would need to be run every time an individual logs in.
In essence, I wish to use Nationbuilder as a method for selling access to a specific Vanilla Forums forum based on a Nationbuilder member's current membership status.
I would reserve the right to publish this plugin's source code on github for open source use.