I just installed and found the same features missing, as well as OAT, TAS & wind direction/velocity as now available in latest Garmin instruments (as installed in the plane I fly).
Also, is it intentional that course is set by primary OBS, vs Course menu entry on the G5? I don't have a separate CDI/OBS in my plane, so don't know if this is a real world scenario.
Are there plans to update the G5 to address any of these?