Water mobs (hostile and not [maybe ride able]) a world gen. settings where you can play like in Civ. so you set the era you start and then you can lock it or build your way up through the ages from stone to modern. Better villages, ones with walls and armies something to make the world my lifelike. Then a special mob for each biome (e.g., the cat for the jungle.) then a temple for each biome with mobs for the temple their own mobs that only spawn in it. More weapons (e.g. spears, daggers, throwing knifes). Then a Myth mode that is able to be turned on and off, when on it adds in the witches, mermaids, big-foot, and dragons (ones that fly in the normal world and don’t destroy everything). Iron ingots that break down into Iron Links to craft chain mail with. Better bows, (e.g., faster reload, multi-shots, etc.). a skill/Level tree, with a enough EXP you can but perks,(Survivor-longer without eating, mountain man-jumping cost 1/4th as much on the hunger bar. craft able saddles. horses. more ores,(e.g., ruby[which cost 2 emeralds], titanium, etc.). iron ore smelts to Iron, Iron smelts to Refined Iron, Refined Iron smelts into Steel. gold tools/weapons/armor does the most damage but still breaks just as fast. more arrow types,(e.g., steel arrows, iron arrows, diamond arrows, fire arrows. etc.). a magic setting that is customizable, spells, enchantments, brewing potions, etc. all that can be turned on and off. gravity can be turned on so it affects all blocks(caves and leaves can have floating block) and floating structures can fall and break if there is too much on it not being supported by a beam under it. sideways stairs and slabs. add in smart movements to normal gameplay. custom worlds, like the custom flat worlds but you can choose what biome is in it. maps that can see 9 chunks at least not just 1. hunting in the forest, deer, squirrels, beavers, snakes, alligators, bears, frogs and birds that can be killed for food. wild pigs/cows/chickens/sheep will attack or run from you unless you hold out their breeding food. animals have both a male and a female form, no breeding males and males or females and females for babies. custom goals when you start the world that you can see in the menu and check off. ropes to hang from high places to be like floating ladders. Sorry its so long but thats all i can think up right now. Enjoy!