There are many features in Minecraft that are very useful and have a lot of functionality in-game, but after watching this video from ibxtoycat, I was heavily inspired to take some features that aren't very useful and make them more so! I stress that this is very much inspired by toycat's video and implements a lot of his ideas, but in the way that I envision.
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Changelog
Added a better representation of in-game content in the featured image, since it was denied.
My suggestions: Gold tools, Curse of binding enchantment, Curse of banishment enchantment, Hoes, Clock, Poisonous potato, Dead bush and Dragon egg