Well... the first thing what they will add to minecraft is More mobs (acuatics mobs for example), the second one is what they will add more blocks.. realistics blocks around the blocky world (for example... mud, apple bushes, etc), the third one is more NPCs villagers, beacuse the squidwards (no offend), are so boring... we need new npc villagers who they will ask we for missions (kill a mob, recollect things or kill bosses in new estructures in the world)...

Well this is/ are my ideas for minecraft :D