Not for Zenimax and Bethesda. I think they'd call it a bonanza!

the ability to craft arrows, werewolf nps, finaly khajiits and bosmer you can marry

The main DLC I would want to see is a dragon riding DLC. You would do a quest and talk to a dragon and instead of trying to kill it you would do a quest to help it retrieve its egg which was stolen by a rogue group of mages in a giant, dangerous dungeon full of dangeous monsters and traps. To get to the dungeon which is only accessable by flight slnce its a huge tower with an enterence only on top is to hitch a ride with the dragon you are helping. She doenst like this but she does it anyway.

After you beat the dungeon which is a tower and an underground dungeon and get the egg for her. You win some dragon treasure and also get a new dragon shout which lets you ride the dragon you helped once a day. This quest would only be available to players with characters whove beaten the main quest and have over a level 30 character.

That plot is similar to one in a Terry Goodkind book I read.

:D

I would like to see more depth and content added to the guilds/factions. Right now, the College and the Companions are poor substitutes for the Mage and Fighter's Guilds in the previous games, and could benefit from a rank structure, more use of the radiant quests, and additional options/content available once you made your way to the top.

More item variety would be nice, too, but that's something the modders will most likely take care of.

Crossbows please as frankly the big armoured knight look dont go with a bow.

Haven't come close to finishing yet, but a volcanic region with lava tubes and whatnot would be a fine addition to the whiteness that is skyrim.

I'm hoping for something along the lines of paying for a perk reset service in the game.