I like Kemba as a person and I was very happy when we acquired him as a Irving replacement, but I have to agree that he's a bad fit with the Jays, especially since Jaylen improved his ballhandling and has become a 27ppg scorer. Kemba is a great streak scorer and shooter. He's very good at getting hot and creating shots for himself and jacking them up for 6-12 minutes at a time. He can really score in bunches when he gets it going. But this kind of scoring is never really within the flow of an offense. He has to kind of become a one man show offensively to do it.
I have to agree with what was previously mentioned in this thread regarding Horford and Pritchard. They are vastly inferior players to Kemba, but they fit better and the offense would flow better because they compliment the Jays better. The sixth man role that has been proposed might seem crazy to some people and I get that, but it seems to me that the Celtics offense might be better with someone like Pritchard starting and Kemba playing the Lou Williams/Derrick Rose role. I understand that it's not ideal for a guy with Kemba's salary and career production to come off the bench, but if we are purely looking to maximize the teams potential, it really may be the way to go if it doesn't look like he will be traded. If Ainge decides that he wants to look into trading him, then continue to start him get his numbers up and show he's healthy and productive because as soon as Kemba becomes a 6th man his value plummets.