First, I was floored at how short the MQ quest was. This DLC is the mirror image of Dawnguard:
Dawnguard - meaty MQ, not so interesing radiant quests; Dragonborn - skimpy MQ; lots of other things to do
Dawnguard - few but large new dungeons, most very heavy on art; Dragonborn - more dungeons, but less spectacular (though Apocrypha was quite interesting)
Now the set up for the MQ had an interesting premise, but then it all fell apart when I met HM and he explained how he wanted me to take on Miraak and why. You're pissed off at Miraak because he wants to leave Apocrypha? What, you think I'm going to stick around? And this is your realm. If you're so po'ed at him, deal with him yourself. We're not on Mundus here, you're free to do whatever you want. Why do you need me?
And then, when I travel to Apocrypha to deal with Miraak, I have to go through all these elaborate puzzles and fight various enemies just to get to Miraak. Why can't HM just send me to where I need to go? I know, I know, it wouldn't be much of a dungeon if we ended up in the boss room without first fighting some enemies and solving some puzzles along the way. But the logic here mystifies me.
If the story was going to involve Apocrypha and HM, fine, but give me some better explanation of why I have to do the job HM wants done. Cause getting a new champion just because the old one doesn't want to stick around any longer doesn't make sense. Guess what? The new champion is not going to stick around either!