Bushman early on as being special and that was accurate. We saw it with Van Noy, Koroma, Jamaal, etc. ZW looks the part and his numbers back it up so far. He is more accurate than anyone since Hall and his YPC would've put him in the top 15 of QB's in the nation last season--in spite of the fact that the coaches really only let him make Mangum passes most of the season.
A QB needs to be very accurate, be able to hit the deep ball, and be able to do some damage with their legs (he's actually a great runner imo and his open field moves have never been seen at BYU at QB). ZW already has those attributes going for him so I see greatness.