Thank you @octo for the detailed write up. I will go back through it a few more times. One thing I would like to highlight is the naming / terminology used. I wrote this up Naming / Terminology but also want to share here.
I believe RFP is not the correct term to be used here. From my research an entity submits an RFP when it wants proposals to be submitted. For example, an architectural firm would submit an RFP to contractors. The RFP is a top down concept. It would make sense for the RadixDLT DAO to create an RFP for a new gateway and community members would have the opportunity to submit an RFC (referencing the RFP) and then a TC and then a RIP.