I've been thinking about what is next as well. Considering what we have first and then what we could use
Experienced Guards= Irving, Smart, Rozier, Larkin
-Irving is obviously a franchise star.
-Smart is a glue guy but his shooting is still not respectable. His ability to contribute more on the offensive end may determine if he can start at SG and play next to Irving long term.
-Rozier has flashes but I'm not sold on his off the bench leadership. I really feel the signing of Larkin as well as drafting of Allen puts Rozier on the trade block.
-Larkin fits the need of a distributor especially if Rozier can't expand his game to maximize the second unit. Larkin should help get the 2nd unit easier buckets.
What's clearly missing is true SG that is good at shooting/scoring from the SG position. The team may be forced to use Brown or Hayward at the 2 spot to better complement Irving or look for a trade.
Experienced Wings=Hayward, Morris, Brown*
-Hayward is the second star on the team.
-Morris is a tweener type that is very well suited for today's game. He could start at PF but traditionally BS likes to have more size to start a game so I expect Morris to play the KO role off the bench.
-Brown with a decent first year should have an increased role his second year. To what degree is the question only answered by how much he has improved. I can see him starting a few games this season.
What the team could use is a pair of 3 and D players to spot up for shots after Hayward or Irving draw the defense. Semi, Brown or Tatum may already be the solution but it's unknown if their game is at that point. I'd take the wait and see approach for this need.
Experienced Bigs= Horford, Baynes
-Horford is a tested big but isn't reliable to do traditional big man things like rebound or defend the paint. He also doesn't possess the quickness to check some pfs.
-Baynes is more a traditional big but he will be asked to take his production to an all new level. Does he have it?
For Bigs it is clear we lack depth, even if you count inexperienced players we just don't have the bodies let alone the a total package player we can lean on. This will once again force the team to play a lot of small ball unless a trade is made or Theis surprises.
So there you have it. C's need a SG that can shoot and another big that is both mobile and a rebounder.