Extra USB output for Storage Only.
Details
One USB output dedicated for storage and one to use as HMI/storage.
Reasoning
Newer motherboards have dedicated USB ports for BIOS upgrades, but in the BIOS the USB ports for this purpose do not accept HMI input. So having two dedicated USB ports, specifically for data and HMI would be highly appreciated so I have my HMI inputs and have the ability to remotely update my BIOs if necessary.
(Perhaps even a third dedicated one for the OS, though the HMI input can already do that...)