Does Turner actually help you that much in a series against a guy like Embiid, Bam, or AD?
Looking at his game logs, Turner was mostly bad against Miami and had some very negative +/- numbers although Indiana as a whole did poorly against Miami.
Looks like he was pretty mediocre in two games against the Lakers last season, and a mixed bag against some of the other big teams.
I just don't particularly like Myles Turner. His TRB% for his career is 13%. That's very poor for a center. His AST% is 6.5%. That's quite low (<2 ast per 36 min)
Turner doesn't create much contact inside either. He attempts 3.7 free throws per 36 minutes for his career and is just about average as a free throw shooter (77%).
Perhaps the worst thing is his TS% which is only 56.6% for his career. For a tall center with nearly a 20% USG rate who is not quite a league average shooter from 3, that's not great.
So he doesn't board very well, doesn't pass well, is just an OK finisher, isn't a great shooter. He's good at blocking shots. I'm not sure what else he's particularly good at.