I think you're missing the "sell anything" marketplace vision.
Step 1. steem engine tokens like erc20s
Step 2. tie steem engine tokens into a steem like function
step 3. build nft backbone
step 4. create a marketplace for nfts that allow people to use their own tribe tokens as payment
step 5. continue to develop easy methods for people to list goods and services for sale in an inexpensive environment that utilitizes crypto and fiat for fast easy payment, simple listing, and a low cost fee structure. use the tribes to help create and develop your customer base and community.
we're on Step 4.