Luigi's taunt in melee was the only one that did something (I mean could do something other than just leave you vulnerable and annoy opponents). I had a neat idea I think about taunts doing something other that just taunting the other players. For example, Young Link's taunt in melee was the classic lon-lon milk drink. That could replenish a couple percents of damage (actually I'd make it only 1 damage every taunt). And with four taunts available, and apparently customizable, I think this would be a cool little add-on. Maybe even some could be like show-offy moves that can physically do something.