How do you deal with Broadcom WiFi drivers?
Atheros also has good support for Linux.
I just looked it up, and Intel's best chip the AC 9560, with 2x2 1.73 Gbps WiFi and Bluetooth 5.0 is <$20.
It's an easy swap on desktops and on most laptops too.
Isn't everything soldered these days - including RAM in some cases ?
Unfortunately not the sp4: https://www.ifixit.com/Teardown/Microsoft+Surface+Pro+4+Tear...
Now pop in the $18 Intel card you ordered last night and landed a hour ago.
Your done !
Oh wait ! NOOB, you forgot to replace the screw !