Hmmm.
Tough question. I'm a senior systems engineer, so am comfortable with the technical side of computer hardware. But the idea of plumbing in a water tank for the house would scare me to be honest. LOL
I have done some mild case modding, and would certainly consider customising my case to fit a system. However, I do attend LAN parties so an additional requirement is that the system is easily moved from A to B.