If a PCB change is required later I will suggest that the connections from the PXA is mirrow'ed (don't know if it's possible to say that in english) to the other side of the PCB. Today there is only a few decoupling capacitors so it would be possible to place pads on the via's and thereby make it possible to solder wires on those pads. It will of course not be easy to solder wires on the small pads, but I think it would be great to have the possibility to e.g use the AC97 audio interface.
Let me know what you think about this.
Best Regards