*More Ores
*More Weapons
*More Mechanics:
**Grindstone:
Upgrades Weapons, similar to Skyrim's Grindstone.
**Grind Mill:
BetterThanWolves concept, grinds Raw Materials into manufactured versions of themselves (I.E, Wheat = Flour, etc).
*More Villager activities:
Building, guarding, Smithing, Combating, Bartering (Already implented, but it should be rebuilt from the ground up), Farming, Etc, make them feel more like the Player, other than just regular mobs/Trade Slaves.
*More Everything.
I hated how NONE of these concepts were never implented into Minecraft, but now, Jeb_ is finally doing something about it, and actually giving what the more respectful fans want, or something that is actually good and inventive, unlike Notch, who just added something that would ruin many concepts of Minecraft (Like the Bed), or, something that wouldn't fit in with Minecraft altogether (EXP). Don't get me wrong, I like Beds and EXP, but I don't think they should of been added like this; Minecraft was meant as a Survival game; not an RPG.
Oh, and I agree with the above (except the Lava Lamp Part, you can make those already).