Different actors have different needs. In some places the TollGate operator needs to be stealthy (plausible deniability) even if that results in worse discover ability for users.
The difference types of TollGates are standardized as so called "recipes".
Thomas (nprofile…qtp5) started an entirely new TollGate recipe that is based on identity for a queuing system that he is building. Waiting tickets are nostr identities and npubs that are still waiting get free access to internet.