There were rumors of somethings related to the Snow Prince however I honesty couldn't find them such as a Spear, Armor, and a book. Not to say their isn't a cool armor set at the end of one quest.

As far as creatures, I was suprised while playing not to see any new water creatures I mean there was a lot of water in the new DLC at one point I was thinking... Kraken? But nope not to say one of the new dragons were awesome. And if you don't know what I am talking about the Veil has a good amount of water (not to say there isn't something that comes out from the water in a part) and 1/2 of the new caves had rivers running through them.
Additionally, thought this was a good opportunity to add a phoenix. Come on the ending has to due with sun and a (spoiler) (spoiler) (Spoiler)... Finally not more werewolf additions besides the the perks... I was suprised.

Not to say this DLC was one of the best in history of the world.

marriage options its such asmall thing that for the effort to record new lines for khajits, and actually implementing it within the game was not enoug for them. also divorce or remarrying

I don't believe Krakens nor Phoenix's are in the Lore.....that's why they weren't added

They added wild wereolves to the game...

Still tons of little things that didn't get addressed in the base game.

Ex. why can't I improve Silver weapons? They look GREAT, but the inability to smith them make them more useless than iron daggers.

Edit: I do appreciate modifications/improvements to the core product, but how/why some things get overlooked just confounds me.

because they probably realized that there are bigger fish to fry than worrying about you being able to improve your silver weapons, which is basically pointless because they aren't even that good.....granted I don't realize why they didn't have them craftable in the first place, I just don't see why they would add it now if they didn't from the very beginning

I was surprised they didn't add new death animations for killing vampires with cross bows. I for one would like to be able to shoot a vampire and have a random death sequence where they burst into flames turning to ash.

Craftable crossbows past Dwarven would be nice as well(mainly because I want to see a dragonbone crossbow/daedric) though this may be possible further down the line?

arrow crafting.. arrow crafting

Serana Marriage
Snow Elf prince
Werebear - ? Why were mods taking down the threads then?
More new armor
Spears
Snow foot prints
A betrayal system for the factions
.... and thats it.

These , I want.

I think mods were blocking threads to get everyone more hyped for the DLC , surely I am now.

By the nine (Eight), it was a trick by bethesda, the SNOW PRINCE HAS BEEN DEAD FOR A LONG TIME, Hell you loot his tomb in BLOOD MOON!!!

The artifacts were all taken to Skyrim from Oblivion you know , well it was 200 years but still..

No giant mudcrab..

WTF

As someone said, arrow crafting, but also Dragonbone weaponry.

Also, considering silver is supposed to be super effective against undead (including vampires) you'd think it would be a mainstay for the Dawnguard.

Underwater battle is something I've been REALLY wanting. I think it is unreasonable to put it more underwater enemies in if you can't fight them. I mean, it's stupid that they have the slaughterfish in there in the first place because you have to get out of the freakin water to kill them!

Get out of the water, and try and lure them into shallow enough waters so you can actually hit them.

i got a killcam with crossbow on vampire yesterday.

You're user of Xbox 350 huh ?
What's this ? some kind of secret Microsoft project ?

Lore I maybe ignorant in, however, they are the story writers and they even created a model for a werebear. Doubtful that is in the lore.
My complaint is that besides gargoyles, vampire lords, (kinda) veil sabercats, revered dragons, and "forgot name" Insects their were no new creature models (actually in rertrospect thats a good amount). However the new dogs, frost trolls, all the soul cairn creatures, and most of the others were given different shades, heads, ect and seemed kinda half baked. Their were many new plants added and clothes ... my point being some of those new creatures just made me want to scratch my head. I mean players of shivering Isles remember almost no altered models only new ones which in my opinion still makes that the best DLC created by Bethesda. I plus I love the phoenix prelesss add one. I mean the quest all had somehthing memoriable to them but it still felt at time like I just wanted to finish parts and not explore... a great example of this is easily the Soul Cairn... it was barren and boring.

And yes to people saying there is no crossbow kill cam there is one. I got two during the DLC. Also you can get a kill cam with it that misses oddly enough.

For people complaining about armor I kinda don't understand that too let's take a count... there is the ancient snow elf armor (1), the heavy falmer armor (1), multiple light vampire armor colors (about 3), Two colors of heavy dawnguard (2), and vampire royal armor (1). Making a total of 8 new sets how you not satisfied plus good models for dragon weapons.

Werebears are, hence a percentage of the community's continual disappointment that we haven't encountered them in Skyrim yet.

In Daggerfall there were Weresharks so I think werebears wouldn't be too out of place in the lore.

new vampire specific wives
fort customization
increase vampiric drain damage

I think the only thing I was surprised not to see was a marriage option for Serena. Character development seemed like it was a possibility. Silver weapons not being able to be smithed/upgraded either. Seemed like the perfect DLC to sneak it in.

Edit: The ability to 'trick out' our respective bases, seeing as it was hinted it a while ago.

There actually were weresharks? I knew there were wereboars, but I didn't know the weresharks were seen in game. Only mentioned.

If a daedric lord wants to turn you into an animal he can turn you into any animal he wants. Maybe even a Werecrab...