I'll just be happy if when they say 'harkening back to G1' they mean:

A: Big armies on both sides - enough of this 'small plucky band of Autobots' vs 'Few Decepticon big guys with a disposable, identical cannon-fodder army' crap.

B: The characters seem to enjoy themselves. Half the time the Autobots in G1 seemed like they were pretty damn happy and were off to have a good brawl alongside their mates - they were saving the world and thought it was pretty cool! And Prime used to laugh now and then - remember that? Enough of Mr. Stoic - give us a leader who would be fun to have a beer/energon cube with after the fight!