This team had the talent to stay with the Bucks and Raptors record wise. I never expected to win a Championship, I would've been ok with a second round exit had we went out with some fight. The problem was this team had Chemistry issues stemming from poor coaching decisions, roster logjams, and a star who just couldn't make things easy for himself.
Coaching mistakes: Playing favorites with Hayward and failing to define roles for the young secondary players (Rozier, Tatum, Brown). Kyrie, Smart, Horford, Baynes, and Morris all knew what they were here for the younger guys not so much.
Roster Logjams: Two many guards and wings not enough minutes. Too few Bigs and not enough health. Maybe we could've trade Rozier for a rotation backup big, who knows. Playing 3 of Tatum, Brown, Hayward, and Morris at the same time just didn't work.
The start who couldn't make his own life easier: Kyrie is simply horrible with the media. From "ask me july 1st" to "I called Lebron" to "We won't lose because I'm here" to "I should've shot it 30 times". He just kept making things harder on himself through the media and seemingly feeding dysfunction inside the locker room. If he went the Marshawn Lynch route with his frustration we might have had a chance locker room wise.
Unfortunately things look bad between Kyrie and Stevens. I wouldn't be surprised if he tried to flex his free agency power by trying to get Stevens fired and I honestly don't know how to feel about that. I don't think their are many coaches in the league who are better than Stevens and Kyrie isn't winning anything by himself as we have already seen.