I never had the chance to post my thoughts about Dawnguard, having been able to play it off of the Legendary edition. I was wrong about the DLC, I know it gets a lot of hate but I don't understand why. I admit I had my doubts and skepticisms about Dawnguard but after I played it, I found it to be a very underated and good DLC that adds so much to the game. I still have some problems with it but nothing like I had in the past.
The good-
I loved the addition of the face sculptor for both gameplay and roleplaying reasons. Don't like the ponytail hairstyle, well you can switch it to something else for a 1000 gold.
The additional ferry boats. This is probably the most underated feature that Dawnguard adds to the game. For 50 gold you can go to either Dawnstar, Solitude, some other place off the northwest coast and Windhelm. I love that feature because now with Dawnstar you can take a ferry to either Solitude or Windhelm and then have access to the Carriages instead of relaying on fast travel.
Soul Cairn and Forgotten Vale. Both locations are really cool additions and I love the music of the Forgotten Vale.
Crossbows, whoever suggested the idea to bring crossbows back and whoever designed them, should get a raise. I absolutely love the Crossbows, they easily replace bows for me. I'd have a tough time leaving my Enhanced Dwarven Crossbows. It's a shame that there's only 4 types, I would have loved to have seen a Daedric Version. My favorite feature added to Dawnguard.
The Aetherium Quest. Easily my favorite quest in the DLC, one of the rewards is probably the best helm in the game.
The Level Design. I gotta say the level design for Dawnguard is outstanding, I was very surprised at how good the dungeons and levels were.
Now the Bad-
Serana. She is completely broken in terms of AI, conjuring up corpses that adds a huge amount of memory to the file, not to mention buggy as hell. I love the character, the fact that she is voiced by Laura Bailey is a huge plus for me but I hate the gameplay design of her. She's only playable as a follower on PC, otherwise I would only take her when you need to take her. I also don't like the fact that they basically nerfed the Vamp Lord while she's your follower, that's a stupid design decision IMHO.
The Forgotten Vale is a bit empty. I kinda wish that the Forgotten Vale had more content then what it currently has. It's basically only good for a one time, maybe two time trip and that's a shame because it's a beautiful area.
Pretty much one sided in terms of choices of factions, there's no need to pick the Vamps unless your going to play as a Vamp. Not to mention that you can still become a Vamp Lord even if you sided with the Dawnguard, that eliminates the choice factor between both factions. It's basically like being able to get both the Golden Saints Armor and Dark Seducers Armor in Shivering Isles.
In closing I will say that Dawnguard is not as terrible as I thought it would be. Yes it has some flaws with Serana being broken and a lack of meaningful choices but it does add a lot to the game like Crossbows. Also the Vamp Attacks are not as terrible as I thought they would be. I thought that was going to be a huge problem but I definitely overestimated the impact that it would have, assuming that you don't leave the Vamps alone and go after them everytime they attack the towns.