What mojang needs to do is fix the friggin traversal, since all they do is try to make minecraft fun and interesting by adding new things, rather than replacing what sucks, or offering better means to survive by creating things that ramp up in terms of craftable objects.
Im sure you've heard the comparisons to terraria, but, for you nay sayers out there, THATS THE POINT, terraria does it "better" BECUASE it offers upgrsdes to traversal which reduce the possibility of death, to the point that falling damage not only is completely negated, but you can actually fly by the end of the game!!
I mean think about it, and i know alot of people place terraria as superior for its combat, but, if with the systems they offered now, the combat cool downs, the bow wind ups, the sheild needing raising, the hunger depleting, the sprinting fatigue from hunger, and THAT F***ING FALL DAMAGE, and the the crap you have to do for a reprieve (THATS NOT VERY GOOD- POTIONS/ENCHANTING/BEACONS!!) and then have the offer something that, instead, offers A REAL PERMANENT UPGRADE, like terraria, going from ropes, to grappling hooks, to jet boots/clouds in bottles, and then to wings (negating all fall damage and even allowing flight!!)
that, THAT, would be a reak upgrade to minecraft and even then allow th to develop more content like the mods would, by allowing them to create other worlds like they did the nether and the end.