I honestly love overhearing you discuss your perfect computers, because it doesn't seem impossible that you might get your wish! One really interesting possibility is to recycle the X61s chassis and use modern PCBs, chips, and peripherals to get you what you want. Another possibility is the creation of a PC ecosystem similar to the "Red Camera System" where yes, your m2 module costs $5k instead of $500, but it it comes in a machined aluminum module that fits perfectly with the rest of your tricked out customized laptop.