We've also suggested NDB appraoches using the same aids for Northern Runway ops to improve arrival rate over the SRA, but no joy.
With GPS, triple INS, and MLS coming in , the only use for ADF is listening to Richie Benaud and the Ashes.
Sounds like a geriatric pop group!
I don't think we'll ever see anything of MLS. P-RNAV to ILS will be the coming thing, with GPS when Europe has its own satellites.
Cheers,
The Odd One