It does open the door to future expansion such as you describe, but I don't know what they're planning.
I suspect this will be a hell of a lot cheaper. And it doesn't require opening the case to get to the motherboard, for those who care about such things. On my CD32, at least, the RF shielding is soldered shut.
Does installing an SX32 require opening the machine? It should not be a requirement for an accelerator, as all the needed signals are on the expansion port.
The SX1 certainly needs no internal modifications.
