For me it's Thor. That's how it is, I'm a Thor fan first. Malekith/Kurse aren't the baddies I would have chosen for the sequel, but the film is looking great and it can't get here soon enough for this fan!
After that, GOTG has definitely gotten me excited, but I wasn't a hard sell. I loved the DnA run and most things cosmic from the outset. (In fact, I've always loved Marvel's quirky outsider characters in general, which GOTG definitely embraces)
Then it's CA:TWS, which is sounding awesome, followed by A2:AoU, which I'll get more excited for as it gets closer I'm sure.
The new Spider-Man and the continued X-Men universe are fine and I don't mean to diminish them, but they just don't get me excited like the MCU stuff does.