The perfect UTAULOID: Has multipitch at every note. Has every single imaginable phenome. (Making it multillingual) HQ all around (dynamics are consistent, no noise etc.) Professional-level timbre (e.g. look at how konuko makes every single one of his utau's sound) Multiple Banks (Soft, Rock, Distortion, Vocal Fry -- heck, just put every conceivable human sound!) Does this mean putting literally every sounda human can make? Then just let the provider sing the song perfectly, THEN put it as a single note in utau and let modulation be 100% also, put everything under consonant in the oto!!! Or let's skip UTAU entirely because of unavoidable engine noise! Use the recording, remove noise and claim it's an UTAU! Let human sing then just edit and retake if mistakes are found. Make covers! Amaze people around the world! People wanna make you the idol because your UTAU is like basically human!!! ...wait Hahaha to be serious though, the perfect UTAU is one that can do EVERYTHING!