I would like to not have to be moving to swing the pick :p
New areas, new minerals, new sprites. Some orange/brown rocks for copper. Silver, gold, etc.
The ability to sell raw ore or smelt it down to sell ingots [like runescape]
Most of these suggestions I plan to do! :) I really want to make so you dont have to move in order to use the pickaxe. Its a little hard but I'm working on it. :)
How about Unlockable and Findable Armour Sets. and a Huge Clothing Selection. and unlockable and Upgrade able Picaxes. and when they are fully upgraded they Change into a Super op Picaxe.