Another crazy dream I have for a real developer laptop would be to have like a port with real gpio pins. Since parallel ports went the way of the dodo, there is no simple way to interface with home built electronics anymore. I got a raspberry pi 3 recently and have been having a lot of fun with it. Also a built in fpga would be cool. You would be able to do a lot of prototyping that way, basically make computers fun again instead of a locked down albeit polished appliance.