LTE interface or PPP interface

Hello,

recently I was testing few LTE modems. Some of them act as a PPP and some of them are LTE interface. It is good if we can configure the modem via ROS but is it really good to have one more NAT because of LTE interface?? If the device is in this mode then it acts like a router. Wouldn’t it be better without one more NAT (PPP interface avoids that). In my opinion, PPP interface with ability to change settings of the modem would be best way.

Some experienced users? Please give some comment and correct me if I am wrong.

BR.