So I've finished DKS for the second time, done almost all quests, found almost all secrets, got almost all achievements. Somehow, I found this game even more interesting on the second playthrough. And here are my final thoughts:
1. If you pay attention to what people say and what's written in the books, it's not that hard to solve puzzles and find secret places. Still lack of markers and distinct quest signs over NPCs, especially in Aleroth, is a pain.
2. At the end of the game I was GOD. Nobody could even hurt me plenty. Final battle with Ygerna took a bunch of time when I played as a mage, but with warrior I killed her in like... 20-30 secs, no kidding. The only place where my warrior was a bit worse than mage were flying fortresses. All the rest was SUPER easy, especially in Aleroth, where skill books rain on you and you can easily max multiple skills.
3. Please, stop telling that FoV is worse than ED. It's not in terms of quality. It's polished much better than the original game, quests are smarter, voice-overs are pretty much OK and so on. Yes, final battle and lack of dragon shape-shifting suck ass, but in general FoV is super. I really hope developers will continue moving this way and their next game/addon will be even better.
4. Oh, and just for the end part: invisible walls ARE ugly. Please, please, please, next time do something about it. For example, if you fly too high, your brain will pop or smth like it. No more invisible walls.
So in general I'd like to thank Larian Studios for great experience. I don't like games like Morrowind/Two Worlds and never play them. Dunno why I even bothered to try DKS, but I never had any regrets. Thank you.