So far the only thing I would like to see added to the Raspberry Pi 4 is the option on the shut down menu to suspend. I know that the display can be turned off after a set time and I suppose this is OK on this machine with the low power it uses. The only actual problem I have had is when a USB 3 flash drive is plugged into one of the USB 3 ports, the mouse locks up and remains that way until the flash drive is removed, This does not happen with USB 2 sticks or USB 3 stick put in USB 2 port.