Hello,
They probably won't do this without a policy proposal.
Sounds like a very rational thinking :-)
So the next step here would be for you to get consensus on a new policy proposal in APWG defining the terms where RIPE policies should apply to legacy address blocks, and in what circumstances the RIPE NCC can forcibly override the rights of legacy space holders. When you get this through APWG, then you'll need to convince the RIPE NCC board to implement it.
As we are at it, please make sure the policy includes how it can be legally enforced. The policy should include a section covering legal risks as … I would hate to see: - a RIPE NCC member suing the organisation as the IP space he has is used else and can not be used - a legacy IP space holder suing the RIPE NCC for have sold their ‘property’ Good luck ! Sincerely. Thomas