ADF
Why do you need the ADF? GPS data bases contain the ADF co-ords and could be used instead. Much safer and accurate. Mind set of the authorities in UK have to change though.
ie Had a CAA Flt Ops pilot observing on a trip a year or two ago into Bom in a B744F. We flew the vor/dme procedure with the a/p coupled to the FMS as Co. SOPS in Vnav/Lnav.(triple GPS input into FMS and VOR displayed on non handling pilots PFD map)
After landing debrief included the comment that we should have flown the AP in Heading and V/S as we were not cleared for GPS approaches!.