Thinking of what people want to achieve in casual play and even in PvP events, this milestone definitely comes to mind. I'd like to see how long it takes

More precisely: Level 30 enchantment. Goal: Enchant an item at level 30. That way it will be hard to a) miss stuff in a completed run or b ) consider the ruleset arbitrary.

I like this idea.

It'd be easier in 1.7- version, no lapis requirement and level are cheaper