My growing Francium balance at currently 1072% APY would disagree with you 
but I get the point and agree with you solely on the membership side.
I like the idea you have and it was one direction I was hoping we would go in conjunction with the NFT Membership Card / Build Value Proposal I had put forward. It was designed to add scalability (as we can leverage the nft infrastructure) and not have to rely on a centralized server for authentication in external projects and potentially internal ones too.
I too would be happy to help here as I think it is a solid idea and creating processes to scale grape will be key in the future to seeing it grow in a lasting way.