This trade helps pacers get elite offensive player, prospects in Pritchard and brown. They also get good backup center in Thompson whilst also acquiring picks. Celtics get good starting big in Turner. Along with great starting point guard option in brogdan.
I personally would like to see the Celtics use Timelord as 6th man as he is so unique. He doesn't really have a position he can do a little bit of everything except shoot. I would use him as a cutting power forward like Blake griffin when he was younger. And on the defensive side use him as a rim protector.