Did a fourth mission and I think I'm bored of the game...
Games like this where you simply clear out all the checkmark items of the map (Infamous, DAI) simply bore me really quickly...
I can't believe I'm saying this but Destiny was much more enjoyable for me.
I'll give it one final chance and check out the low level DZ... if that doesn't hook me, I can't see how I'm NOT done with the game... because it's just more of this until I decide I've had enough.
Edit: When I think about why I love Diablo III and Destiny more than this, I think it is because they have a much more linear nature. Sure you can "Explore" Destiny... but really you start out by doing a very linear set of missions, and unlock side stuff as you go. Same with Diablo, which I never really got deep into Adventure Mode.
This game is far too open world for me... I really dislike open world games.