I messed around with the archiving bit, and I must say that I wish there was an option, at least for premium members, to turn on and off archived waymarks. This would allow a waymarker to take out archived waymarks if they are looking for something to actually visit, but if they are just doing some online viewing to look at stuff they could still see items. I think this would really help out alleviate issues with the idea of archiving and hopefully is down the horizon... I think it is a natural evolution of the idea. Heck on gc.com to use that as an example as well, you can actually view archived geocaches so why not waymarks...
Either way I go about it though, there will be future work for officers. The non-archiving way loses the year grace period, so the work will actually be a little more immediate. =P The grace was meant as a way to make archiving rare. The nice thing about the Red List though is that it does update yearly so at the very least We only really have to look at it once to see what was removed and go through and do a sweep of all those animals at once and be done with it.