Hah! I can outwishful think Rustican anyday, I was a Cray laptop with Hyperlight WiFi and DVC (direct visual cortex) graphics. With a supermicro black hole for the power source.
Of course you can cram an FX into a laptop, it might be a tad thicker than some and the battery life might suck, but then that's the description of an 8890.
It would help a little, of course, if they got rid of some of the less useful items, like the mp3/6-1 reader port, the serial, parallel and ps/2 ports, the floppy drive, the audio DJ, etc, etc, as all of those can easily be replaced with external peripherals.