There is no way Crowder should start at the 4. Now if Hayward is the 2, then Crowder starting at the 3 makes fine sense.
Stevens will obviously try out lineups, but I think he originally goes with Thomas, Smart, Hayward, Morris, and Horford. I wouldn't be surprised at any number of lineups in which Brown, Crowder, and Baynes are all in various lineup iterations as a starter though.
I mentioned this in the original post, but Hayward played A LOT of the 4 during the postseason and it worked very well for him and the Jazz (he averaged 24/6/4 in playoffs).
Obviously that changes here, and he may play a little bit of the 2, mostly 3.
But I think we'll see short spurts of Crowder/Hayward/Horford playing the 4 as well when Morris goes to the bench (or Morris shifts to the 3).
Idk man.. there's a lot of versatility and potential rotations. I'll leave CBS to decide on all that lol.