Well, apart from how modular the shiftphone is and how easy it will be to disassemble, I - right now - would not really advise anyone to buy a new shiftphone.
Simply because I have no idea how good the phone will be. How well will the connections of the modules hold and stand the stress of time.
I wouldn’t have thougth, that a wee bit large battery frame could result in hundreds of crash-reports.
Nobody would have expected the camera or microphone of the FP2 to fail for obviously quite a lot of people.
Therefore, when pointing someone in the direction of shiftphone, I obviously would do so warning, that this will be a new product, by a small company, with a really new design. While they sure will do their best to make it a perfect phone, there’s always a higher risk, that unforeseen problems occur.
If one is not willing to take that kind of risk, better look for another phone (maybe a second-hand one).