I started looking at how components will be installed in my design and I discovered you would have to disassemble a lot of components to add/remove a HDD. So here is the start of my solution, a removable drive bay. The bay is cooled with a 120mm fan and can be pulled out of the back of the case. I had to reduce the number of drives from 5 to 4 but its a small price to pay for ease of use. Its not 100% finished (and not as elegant as SnowyOwl's drive bay) but its simple and effective. Edit: I could use some feedback on power/reset button placement? I have 2x 16mm buttons located on the side of the top "bulge".