The status effect sugar_rush could have a effect on village NPC's. Ever been around a person who was bouncing on the walls? You either wanted to join them or keep your distance, you know for your own sake in collateral damage. NPC's could back off if you get close to them the like. Friendly NPC's would have this full throttle when they are attacked. Then to attract NPC's there could be a show set up, like juggling, music playing/singing, selling stands. Why not be able to build your own stand.
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Neat idea, i like the thought of entertaining villagers. Dunno what to say about the buff though, i think entertainment is enough. Add that in to the instruments too, maybe some npc and player dance animations.