I liked Kanter, but it wasn't ideal that he seemed to be unplayable against a lot of the teams we have to beat in the East (Toronto, Miami, etc.). Yeah he could rebound, but Thompson can rebound AND play good defense. And he doesn't get pushed around by other bigs that often.
We have enough scoring around him theoretically, so if he could focus on hustle, defense and rebounding (especially offensive rebounding), that'd be fantastic