The Jazz offense doesnt generate enough easy baskets, specifically transition points.
https://www.teamrankings.com/nba/stat/fastbreak-points-per-game?date=2016-04-12
2nd to last this year with 9.2 fastbreak points per game (which seems high).
https://www.teamrankings.com/nba/stat/fastbreak-points-per-game?date=2015-06-16
Last year we were at 12.2 point, which isn't great, but it was good for 17th in the NBA.
So what changed between those two years? We basically had the same team. Alec was out for about the same number of games and I don't think Exum had that big of an impact in our transition game (though I might be wrong).
*Turnovers are a close 2nd though. If you are going to be a half-court centric team based on defense, you can't give away possessions*
I really think these problems would be solved by just getting a starting PG. Hopefully Exum can do this, but I will be surprised if he is ready to be our PG savior next year.