Okay, here's what I want for patch 1.7 and what they can fix in Dawnguard. Don't get me wrong, awesome expansion, but seriously, there is some stuff they could have added and could later add that would make it better I think. Sound off in the comments below if you agree or disagree (be civil please!), or if you have your own ideas.
1. Serana marriage. Seriously. She's the hottest NPC I've seen so far and we get nuffin' when it comes to romancing the sixy vampire heiress.
2. Let us take over whatever castle we waste at the end of the DLC. How awesome would it be to have an ENTIRE castle to live in? Complete with servants or minions

3. New abilities for Vampire Hunters when you side with the Dawnguard. It just feels like you get a crossbow and that's it. You get some cool equipment, but some new powers and spells for the Vampire Hunters would be sweet.
4. Serana marriage. Seriously. I'm posting this twice so Mr. Howard gets the point if he reads this.
5. Certain quest NPC's should be fine with you being a Vampire Lord. I popped it earlier today in front of Delphine so I could FIGHT THE GIANT EVIL DRAGON SHE WANTED ME TO KILL, and she ignored the dragon and attempted to beat the crap out of me. Makes no sense.
6. Faster change form time, both for vampires and werewolves. Just seems like it takes too long. You have to know the fight is coming if you want to change in time and not get the crap kicked out of you while you change. Not saying white smoke *poof* I'm a werewolf but faster would better.
7. Serana marriage. For the love of all that is unholy Mr. Howard, please? Pretty please?