Other than Battlefield or CoD, I tend to judge games based on what my son thinks.
He wasn't really into Destiny at first, he would have rather watched me kill the "My little ponies" in Diablo 3 instead of running strikes.
That being said, he was there when I started playing TTK, and immediately went nuts. He has been my shadow in the game for the last two nights, and I let him choose what mission I run.
He keeps wanting me to run the starting mission on Phobos. It has really been awesome to see him soak up the dialogue and visuals, and he even started incorporating parts of it into his own stories.
For my son, Bungie really nailed it with the Dimensional rifts. My son loves reading about Dark Energy and the Multiverse Theory, and the game now really plays up to that.
So that being said, I have to thank Bungie for making a better game than what we had.