Red Line Entry
Your argument seems based on the presumtion that Harrier was chopped to save money. SDR stated it was about capability. We have all seen estimates indicating more could have been saved by dropping Tornado but the type is needed for Afghanistan and to give the RAF a manned deep strike platform until the F-35C arrives.
If the Navy can come up with a workable plan and budget to run on the Harrier using the RNR and the Government can be persuaded (which I agree may be doubtful) why are you bothered. The operational SHAR force was never more than two small Squadrons for three carriers before it was chopped in 2006 so in theory at least only some of the very best airframes that would otherwise be sold or scrapped would be needed to retain core deck flying and aircraft handling skills.
Unless of course there
is another agenda