Not sure how a thread about Kemba morphed into a discussion about Rozier but I guess they were kind of traded for each other.
Anyway, I don't see the value in trying to compare Kemba to Rozier. I see Rozier more comparable to Marcus Smart. Rozier can put up some flashy numbers but he is no Kemba Walker. Walker is an all star, maybe not post injury but certainly was at the time of the "trade". Rozier just is not that level of player.
I can see the criticism of Walker's contract, it's a big number, but I don't feel we would be better, even relative to the post injury Kemba, if we had Rozier. And if you did want to play with a different type of PG, we could just play Smart.