A ) Dungeons in Morrowind are pretty much the same. You've been to one you've been to all of them. Example you've been to one tomb you've been to all the tombs. So this might hamper you to explore most of them. Though the only thing that you might still wanna explore them is to get tresures.
B. No. But finding the crank to open the dungeon doors is the only puzzle type you'll be finding.
C. No. If You find some nice treasure than that's nice. 70% of the dungeons that you'll explore don't hold anything worth mentioning.
D. No. M&M dungeons is walk a few feet, fight swarms of monsters. Morrowind dungeon is walk walk walk and " BAB! " Oh, a monster just hit me. One swipe of your weapon at it and it'll be dead.
E. 70% wilderness, 30% in dungeons. Due to the fact that dungeons are pretty much the same. I prefer to stay outdoor as much as possible.