Building a raspberry pi into a laptop

Hey, I had this kinda crazy idea when I saw a friend log in remotely to his PI using X-server. Programs would run on the pi, and he would see them on his laptop.

I had this idea of, what if I build a raspberry pi 2 into my laptop. Not like any other pi-top project. I'll have a hybrid intel/pi laptop. I can use it to do Linux-stuff, have a portable gpio prototyping thing, I can host some local webservers, use it as a build server or

My laptop has a cd-drive that I've never used, people suggested me to put an SSD in there, no way, I'm getting a separate computer instead :D

What are your thoughts on this? What would you do with a second computer inside your laptop? Just wondering...