I'm also not that hard on Sully. I think he is our best rebounder. He needs to knock down shots though. he's really in the same position KO is. Just different assets and strengths and weaknesses.
My frustration with Sully is that from what I've seen the past three seasons, his limitations are ultimately all mental, and all things that could be improved upon if he had the will to do it.
Ultimately the only thing holding him back from being a really good player, is him.
Sully has a LOT of talent. He could be really good starter, possibly even a borderline All-Star. He's got the talent to get there. But he is horribly lacking in discipline.
- He can't keep in shape
- He seems to completely lack all respect for authority
- His motor fluctuations from great to nonexistent on a day by day basis
- His shot selection (and general decision making on the court) is frustratingly poor
Sully's most productive season in the league was his rookie year - a season in which I was utterly convinced he had All-Star potential.
Since that time he has fallen further and further off the cliff on a year-by-year basis, to the point where I just can't accept anymore excuses. He apparently started this season in the best shape of his career, he was given the starting role for an extended period of time, he's in a contract year, and he STILL can't keep it together.
The only way I can make sense of all this is that in his rookie year, Sully had Doc Rivers, Paul Pierce and Kevin Garnett around him. All guys who were known for their tireless work ethics, and for their "take no crap from anybody" attitudes. When surrounded by these guys, Sully clearly excelled, which leaves me thinking that he must be the type of guy who needs to have a permanent babysitter - a stern veteran to constantly yell at him and keep his butt in line.
For Sully's sake, I hope Danny finds a way to trade him to San Antonio. I think if he's going to excel anywhere, it's going to be there. Because if he doesn't get off his butt, Popovich will kick it so hard that he won't be sitting for weeks 
As he is now though, in all honesty, I would have no hesitation trading Sully to the Lakers in return for Brandon Bass. For all his faults and limitations, Bass gave his all every single night, and you always knew what to expect from him.
I'll take a guy who uses good effort to make the most of minimal talent, over a guy who wastes good talent with minimal effort, any day.
As great a coach as Brad Stevens is, he's a "nice guy" coach. I don't think he's has the type of personality to get through to a guy like Sully.
Good points and I definately agree with you there. If there is one thing that bothers me about this team, it's thats we seem almost too content just going through the motions and aren't really held up to a higher standard. A lot of that is on Brad and his style of coaching, and more just the state of the team and trying to develop these guys. If this team misses one thing it's a guy like Tom Brady who really holds these players up to higher standards.
What I don't like about fans is there is a double standard. They hype up guys like Mickey, but Rozier gets trashed when they are basically doing the same things. Same with KO and Sully. Everyone just likes to beat up on Sully because it's cool to do that.
The years before last for example everyone gave Sully a free pass. He was our savior. For the last several years, while other players got called out for their lack of hustle, Sully could do no wrong. I disagreed there too.
As long as this team is in this development stage, and people keep going back and forth on whether we should tank or not, it's the same thing. There's just a lack of consistency in all of it.
I don't believe in tanking unless we are completely out of it and it's absolutely necessary. I think this team should be out there trying to improve every game and trying to win games at this point. We have Brooklyn's pick and all these draft picks for that reason, where we can just focus on getting better as a team.
At some point Brad needs to put his foot down imo. We don't have Tom Brady right now where it really falls on the coach to do that. Brad is too nice sometimes.