i also dont like the voice line, sounds really out of place, i bought the skin for the looks (which was a damn bad idea because the box right after i bought it had the skin.... yeey for wasted currency) and that weapon, its gorgeous in gold.
i use the 'thanks' spray on pharah and the 'tea time' spray on widow, both tracer and pharah got the laughter emote, while mercy got her sweet sweet caduceus emote.