Alright so i have 300 + hours into Skyrim and theres alot of things i want to see added to this game. 1) Daedric Realms, visiting and becoming shegorath was one of my favorite things in Oblivion and i would like to go to multiple daedric realms in skyrim like Nocturnal, Hircine, and Boethiah would all be great princes realms to visit. 2) Continued storyline, i can eaisly see more missions being added to the storyline...Alduin mentions being the first born son so they can easily add a new set of missions to take on a new and more powerful dragon. 3) Civil War missions, i would like to see radiant civil war missions similar to Grand theft auto gang territories after the civil war is over you could encounter a courier that informs you "white run is being attacked by (insert name of the side that lost civil war)" or you could travel to a town and realize that the side that lost the civil war has taken over that town, stormcloaks could retake the towns they lost, riften, windhelm, winterhold, etc and if the imperials lost they could reclaim solitude, white run, etc. 4) Dragon weapons 5) smithing or fletching arrows 6) A scythe - maybe you could meet sithis and do a set of missions for him and the reward would be Sithis Scythe 7) Melt weapons and armor back into raw materials 8) New Shouts 9) New and Better one of a kind weapons. 10) Maybe some missions involving Thalmor. 11) More guild missions - i felt like they were all rather short and the radiant guild missions repeat themselves quite often.

Well thats all i can think of off the top of my head.

one does not simply "meet" sithis, although new weapon types, scythes included, would be nice

I like your ideas, but this needs to go in the dedicated DLC topic:

http://www.gamesas.com/topic/1348297-unofficial-dlc-discussion-possible-spoilers-thread-4/

You can't really meet sithis....

Yep