That too was one of the biggest drawbacks that did the Mac Pro in. the "spaghettification" of the desk. with internal expansion, you can do a lot of expansion without changing the form factor of your device or needing additional desktop space... (Plus they also support external expansion). But with these locked down boxes, ALL expansion is external. Which means that you have to have a place to put all those external devices. To many, this image below is a real issue with the idea that everything that's not "core" should be external.