My thoughts on main quest and end of it, no real spoilers ahead:
The boss fights of main quest are all very easy, apart from 1 which even then wasn't harder than a lich.
Graphics were the fanciest at the end, it did feel somewhat like an epic tale remotely, but there was nearly not enough build up and after it was over I felt like "Oh, it's over now?"
Shortest and frankly worst main quest in TES, being the Dragonborn felt even less grand than the Champion of Cyrodil, not to even compare it with being the Nerevarine.
What I grew to dislike most about skyrim is the mmo type of enchantments on equipment like "+20% to x skill" and how your character is essentially in a completely different stat system than the NPCs, unlike tes3/4.