I'm really heartbroken that I can't use a Pinephone as a daily driver because of the simple fact that it doesn't have a 5ghz wifi antenna. Where I currently live there's just too much interference on 2.4ghz. It's literally the one feature I need. As soon as they come out with a model that has 5ghz wifi I'm happy to jump right on board, especially since they're coming out with a keyboard attachment.
The battery time, at 3–5 hours, and the inability of the phone to charge while turned on, they called "A stark reminder of the Librem 5's beta status".
You should be able to just put wifi USB dongle into the USB-C port. These things can be small. Though there are no USB type-c wifi dongles apparently (now that I'm searching the web for them), so you'd need an otg adapter too, and there goes the size benefit.