After playing this release of survival mode, the one thing that i felt was missing (that was absolutely needed) was a tools function. it would work in a fashion similar to the block function we have now. a second option bar above the blocks (or somewhere on the screen) containing things like swords, bows, pick axes, etc. a sword would aid in close range melee combat, but take extra time to mine, the pick axe would be the exact opposite. the bow would shoot (unless there is rock within a certain distance, in which case it would swing) with left click, and act normally with right. once the crafting system is implemented, we would be able to make better swords/bows/axes/other stuffs to add to the tools menu.
sorry for the ramble, been meaning to post something about this since i first played the game, haha.