Home internet with G4AR - no passthrough, reservations, forwarding....

Title pretty much say it. TMO disables the web admin interface on the back of the gateway. I have my own mesh router. It doesn't seem like I can do passthrough which would lead to double NAT. Also, the gateway would still be sending wifi signals which could (would) interfere. If I ditch my mesh router then it seems like there are virtually no options. No guest network. No IP reservations. No forwarding. Am I missing something? I guess this service is for people that need very basic internet.