Let's clear the air...
Looking at 2 destroyers, one with *DS and one with S/DS will not necessarily tell you chronology. It's not a series where they changed the markings over time. They may denote RUNS of destroyers which, as we've discussed, vary substantially. The S/DS in my bag was made in 2011 (Patrick Brown summer fundraiser). The confounding factor here though, is that many more runs are marked *DS than anything else (S/DS for example), so that alone won't necessarily tell you which run that particular disc is from either.
As for the pre/post-Avery differentiation: When he chose the mold as a signature disc, they had a large stock of blank destroyers from a particularly popular run which they put his sig on. Then the next time they molded up a new batch of destroyers they weren't the same - I believe this time they came out flatter, where the big arms tend to prefer the poppy top style. However the most recent run of Destroyers has more dome/pop to them like the first run where they stamped Avery's sig on it.
Destroyers are a mold that gets tweaked constantly...and evidently molds up differently as well, so with that combination you get a variance in their flagship big-arm distance driver. That said, if you're looking for the SWEET ones that the pros such as Patrick Brown, Avery Jenkins, and Nikko like/liked - find stiffer, poppy top, S/DS ones with a slight marble to the plastic.