I suppose there are sides to being a good seller although responsibility for unit / user malfunction cannot entirely be a fault of the seller. I think cooling in gaming style cases has improved leaps and bounds over the last decade... the power supply is a third party addition, utilising the pcie blanks for spacing with  some kind of custom cradle for a tek-fix to the case / chassis would possibly work? Those custom milled heat sinks could be turned down a notch and hey presto -- a scalable blade based system  --- you could prohibit user malfunction with the heat sinks.