I think the SG/SF position is very interchangeable in today's NBA, especially with the Jazz, as Hayward plays both positions. That being said, rankings:
Wings I'd rather have over Hayward
1) Lebron
2) Durant
3) Harden
4) Thompson
5) Leonard
6) Melo
7) Wiggins
8) Paul George
9) Hayward / Rudy Gay / Wade
All of the players listed above hayward offer some type of elite skillset. I want my #1 option on my team to have that.
I love Favors, but think that the Jazz would be benefit from having a PF that can stretch the floor alongside Gobert. PFs I'd rather have than Favors:
1) AD
2) Love
3) Aldridge
4) Bosh
5) Griffin
6) Ibaka / Randolph / Millsap
7) Draymond / Favors / Duncan / Dirk
As far as the Center position goes, we are very lucky to have Gobert. I place him at #6
1) Gasol
2) Howard
3) Cousins
4) Jordan
5) Vucevic
6) Gobert
7) Hortford / Drummond / Noah
Take any combination of a PF and Wing above Hayward and Favors and place them with Gobert, and we're a lock for the playoffs next year. (Getting ready for the hate from JF for stating my opinion in 3.. 2.. 1..)