it would be nice to give people the option to mount external antennae to strengthen signal reception for 3g/4g portable modem/router use cases. so far only very few proprietary options exist with external antenna routers with integrated sim options.
a 4g router scenario for the librem 5 would be pushing it too far in terms of heat output in load i imagine but i can see a 3g router a viable alternative for the librem 5.