I want to take apart the existing externals to reduce clutter. That is really my only goal there. Putting them in a NAS would have done it and now, putting them in a custom tower will as well. Not sure on those measurements, but they are WD Elements, if helps.
I'm still not sure what I'll do on further expansions though. Hopefully something that keeps clutter down and doesn't require drives to be plugged into a laptop 24/7. I'd like wireless accessibility (from computer, roku, and ps4) and the option for a sleep mode and maybe self diagnostic checks.
The down side I am now seeing to NAS's (for me, anyway) is that I am forever expanding my drive sizes when I can just fill up 2 tb after 2 tb drives for cheaper than buying a 5 and then a 10 (for instance).