I think the adding a function that allows you to type anything and beat up the doll with the words, maybe adding its own sound option for certain word that is typed in like if you typed in love a heart sound will play when you hit the doll and it would heal him/her or if you typed in fire the words would catch fire and burn the doll like other elemental items wold.
Maybe they should add a water balloon gun, and different elements for the balloons like lava balloons (idk how they would get said lava in to the balloon but :\), acid balloons, healing balloons. Remember its just my idea.