One thing I really like about pi-top (that everybody else seems to hate) is the fact that the USB ports are deeply recessed and protected under the cover. This means I can leave USB dongles plugged in while travelling. However, in order to access said ports, I have to slide the perspex cover off practically all the way -- because it slides off to the right rather than the left.
With the current configuration, gradually sliding back the cover gives access to the hub first (why do I need that?) and the USB ports last. If the cover slid the other way instead, I would only need to partially open the cover in order to access the USB ports.