I'm just taking a wild stab at this, but I'm thinking that maybe some of the more recent interest in the G1 series may have to do with a lot of the G1-inspired toys coming out (new masterpieces, TR, etc.). I have been generally out of the hobby/fandom for several years, and the past few days I have been revisiting TFW2005 and getting a general feel for the state of the fandom. It seems there is more focus on G1-inspired stuff at the moment than the Bay movies or the new(er) animated series. Perhaps this may prompt people to dig into the G1 origins a bit more? I dunno. I realize that most stuff in the TF fandom is G1-inspired in at least a general way, but a lot of things at the moment actually seem to be modern updates to the G1 originals (the TR stuff, for example) as opposed to complete reimaginings (as in Armada, Energon, Cybertron, etc.). Just a thought.