If the "needs maintenance" log is not for the purpose of indicating a cache needs maintenance, as in the case of full logs, what is it for?
I don't generally bring replacement logs with me, or baggies or cache containers. I commend those that do, but it's just my choice. Expecting someone else to maintain your cache is wrong IMO. I have on a few occasions, twice I think, brought a replacement cache to a cache I knew was damaged, Maine's Resident Rock Star and Monhegan Magic. Actually, 3 - I replaced a GRC once!
It's nice when people are willing to help out, but if you can't maintain your own caches you have probably placed enough.
Anyway, back to the original topic, this is a neat idea, sounds like it is on the end of a gate that lifts, too bad we can't do caches like that here.