1.Waspinator would have been killed instead as originally planed resulting in a stronger fan following that would later merge with the Dinobot fan following to challenge the starscream fan following

bringing fourth our darkest hour
2.Scorpinok would have gotten a better toy than his happy meal deal and every one would be "I'm luv'n it" might be a more animalistic version of energon Scorpinok. A prequel to the triple changer if you will. Story wise he'ld step on Infernos toes or get along just prime as TM2 megs punching bag in season 3 ala galvatron and cyclonus.
3.Maximals would be out numbered and out gunned. The attempt to bring back Dinobot might have been sooner, more desperate, and actually used.

4.Tigerhawk might have never happened. With more face time with other toys, the TM fuzor might not have been on hasbro's promote list. Conversely Hasbro could get greedy and extend the vok embassy's shelf life with more plot and rather than a true death a feature of it's component sparks returned as TM products... protoforms of there former self.
5.More survivors for the Bowel Movement forging a plausible altered direction on cybertron. With possible fan support, Transtech follows BM rather than Armada... unfortunately we unleash something worse than everything that's ever ruined TFs since 1983
But we get a cool nightscream toy out of it and a nearly G1-ified Depthcharge.