-I am dieing for a command which changes texture pack!
-A better way to add sounds into the game.
-Better sky edit method than mcpatcher
-Inbuild mod-client
-Flower Pots that can float
-Stairs that can be placed sideways as a maybe- not sure how it would affect the gameplay (would it round too many objects off and lose the square feel.)
-A better worldedit version available through cheats in-game- activated though an F key.
-Command blocks in the item list
-Having own head in item list
-Sponges spawn deep under the sea.
-Inbuilt console (before startup) guidance for anyone having minecraft issues. Via a chat or by a box with minecraft forum in with activation- logged in through mc profile.
-Ability to record the game and save in mp4 format in a chosen location. Which will produce less lag than using other software over the top of the game.

Whats yours?