Not sure if this actually exists, but I would like CPU fan mounts to be able to swing open like a bank vault door. Just twist a couple of levers and swing the fan out of the way. It would make life easier for replacing thermal paste/liquid metal, or accessing the CPU in a pinch.
There is a power cable that runs from the fan to the motherboard, worst case scenario is that would need to be unplugged when opening this up. I’m not familiar with water-cooling setups, this may be applicable to those.
Dave's Geeky Ideas 