Add DNS over TLS as additional option to the Asuswrt-Merlin CLI Router

Installed NextDNS with CLI on my Asuswrt Merlin AC88U router. Till now I am very satisfied. In few days I will buy the 1 year subscription. 

But why is there no option in the CLI to change the protocol from DOH (DNS over HTTPS) to DOT (DNS over TLS) ?

Personally I prefer DOT to DOH. Only if I was in some countries where free speech is a problem I would prefer DOH over DOT. 

It would be nice if you could add the DOT option to the CLI  as a additional choice.