Can you explain what you mean? If the company decides to remove all MD80s from a base, why wouldn't they want to displace you per 12.L.1.a? Sure they can decide not to, but that would only mean a bunch of pilots would be getting paid indefinitely for not ever working again. That would be a great deal but doesn't sound likely.

12.D.3 says all vacancies will be awarded in seniority order. (I.e. a base decides it would like to add a bunch of airbuses)