All I want is to be able to replace the hard drive when it fails after 18 months, and upgrade the RAM. Also need an optical bay for a tower. It would be nice t

All I want is to be able to replace the hard drive when it fails after 18 months, and upgrade the RAM. Also need an optical bay for a tower. It would be nice to have more than 2 USB ports, when I'm paying over $6000, without having to look for a PCIe board that has a compatible driver. Also, audio input would be a cool feature in that price range. Main thing really though is replacing that hard drive when it fails, which they always do before long.