@patrick Very true, but I'd be willing to add a few hundred bucks for such an option (if it's USB-connected)
An m.2 connector (and proper antennas already built into the chassis, which is likely a costly investment as well) for a modem like the BM818 used in the @purism #Librem5 would be just perfect (see, I'm daydreaming again!)
I could of course deal with an external USB modem, but that's another device to carry (and not forget to pack), which I'd rather avoid