jolla device upgrade [request , suggestion]

preferably the existing or the next jolla device could be made or done in such a way that the internal parts could be upgraded... make the higher capacity of parts with the same dimensions of the previous one so that you won't have to buy a whole new product.... so yoy could upgrad thr memory , ram , camera or the processor for example.. by just paying for the individual parts.. and can save a lot of money... this changing parts can be done by giving it to the service centers for upgradation.... i think it won't be possible with the existing device .. but rather the next one