The 2015 story will become more coherent as time goes on. I don't remember the Toa Mata having such a great story when they first launched, the story developed over time. The Toa Mata are iconic, there's no doubt about that, but the 2015 Toa have much more playability and much better construction techniques. I have never bought a Hero Factory set so the parts were all new to me, and I am only impressed. Oh and the Throbots did not have a story, but they did pave the way for Bionicle.