The dilemma of unused Certificates (at any Category level) occasionally comes up. I looked for other posts around this topic and found mostly ideas suggesting the possibility of some amount of points being rewarded for unused certs. What about awarding 1 Bonus Night for the expired cert? It may have been discussed already, but I just couldn't find it. The 1 Night valuation would seem fair from the company standpoint since the cert is by definition a free night. It would certainly be better than the current situation where expired cert = nil. I, for one, would accept any help, however small, toward the ever-elusive Lifetime status!
Does anyone recall whether this suggestion has already been discussed then allowed to slowly drift away into death by archive?
I don't know the answer to your underlying question. However, if you have a free night certificate that is about to expire, I would encourage you to call the Marriott Rewards service folks and request an extension. They have been accommodating in the past and may very well grant you a one-time extension of the expiration date.