I agree that some of the toys had gotten very complex. DOTM Prime was a case in point. But I'm not sure happy-meal level deluxes are the right reaction. There's no cleverness in a $35 toy that matches the complexity of a $2 fast food trinket.
I'm an adult collector but I *remember* as a kid being impressed with the cleverness of G1 toys; Jazz, Dirge; Wheeljack.
I also remember being underwhelmed by the Sparkabots with their laughable transformations, poor robots modes and a gimmick that, frankly, didn't make up for such basic engineering.