I do like terraria but minecraft has more of that addicting edge to it, I play terraria when i'm bored and no ones on my mc server, over all i think minecraft is better, but terraria is a great game
1. Make a quest game mode where you can program npc's to say things when right clicked and stuff like that,also be able to share quests online. 2. Elemental mobs. 3.Sky dimension, basicly like the aether :D:D
They should do more gamemodes for the full version of minecraft, i.e survival,creative,hardcore and a quest mode,if notch and jeb are giving it an rpg aspect i think this would work well with it