Hasbro at present seems completely ready to ride the “84 cartoon cast doing 84 cartoon stuff” until it kills the brand again (for the second time).
Earthspark aside.
Not sure that's really accurate... we just had a blockbuster summer movie that was mostly Beast Wars guys and new characters (with some name re-use), the only '84 guys are Optimus and arguably Bumblebee. The next line of toys (United) doesn't have a single G1 guy in it, much less '84. So one branch (comics) is all '84 cartoon, while three others (movies, cartoon, toys) aren't.
And going full-on 1984 makes a lot of sense for the comic book, IMO. I know stuff like Roberts' MTMTE/LL was a hit with a different-than-usual segment of comics fandom, but the majority of people buying comics are still dudes in their 40s who would've grown up on the G1 cartoon and that's what they're looking for. I think that's a big reason (along with getting DWJ as the creator) issue #1 sold so well and garnered so much hype (and good reviews, general consensus I've seen on non-TF sites is positive), it hits the casual fan a lot better, in a market that is already going to be predisposed towards liking the '84 cartoon side of the franchise. I know all of us superfans get kinda bored with it, but I think it's accurate as Shadewing points out that it actually hasn't really been done for awhile.