A few friends and I were discussing at work how nice it would be to be able to make your own custom laptop or smart phone. Something pluggable where more than j

A few friends and I were discussing at work how nice it would be to be able to make your own custom laptop or smart phone. Something pluggable where more than just RAM and HDD were swappable. One thing that came up, however, was what to do about "evolving" wireless standards. Well, what if you could get a completely open source software defined radio? Might be bloody expensive for the miniaturization, and it would have certain physical limits (due to antenna sizes mostly), but it might go a long way to solving the whole problem of having to "upgrade" your phone or laptop just to get higher connection speeds, or have NFC/Bluetooth 3/etc. (the above are ramblings of a code monkey who dabbles in simulating RF; negative mutterings about how unrealistic or stupid the above ideas are will be politely ignored).