Looking forward for flow-based water shaders and advanced follower commands.

I think what people really want is the flow based water shaders that make rivers flow the way they should instead of sideways. That has not been put into the game just yet. I'm really hoping it will. The underwater effects that you're thinking of were a nice addition too though.

vv Double post vv

a lot of the things that you say aren't implemented might actually be coming in Dawnguard. Like High level draugr (basically in soul cairn).

Waygates look straight out of the soul cairn.

I'm sure they'll add plenty of dungeons with dawnguard, and they could implement the dungeon enhancements.

And a lot of the other stuff could easily be brought in with Dawnguard. They've stated that what they showed is only a little of everything their added, and that there would be "surprises".

Spears. If the Skyrim expansion pack DLC had nothing but spears, it would be the greatest expansion pack DLC ever.

Dark dungeons wouldn't be bad either.