Not only would Kyrie go back to someone he escaped from, but to a worse roster with serious question marks, problematic front office, and suspect coaching philosophy. Frank Vogel was always a coach that people loved or hated. Players fought hard for him, but the Pacers teams never beat LeBron, because there wasn't enough plays built to allow Hibbert, George, and West to take advantage of the Heat's size.
Ball - Dominant PG with solid defense, but cannot shoot.
Ingram - Blood clots, serious liability on shooting/defense
Kuzma - Overrated shot chucker, can't defend anyone, unable to shoot 3's
Then you have Rondo, and McGee, who both have team options.
Out of everyone in their roster, who is actually talented enough as a star? Maybe Ball.
That being said, Kawhi wouldn't go there. Clippers look more interesting, plus Kawhi and LeBron are not good fits for each other in terms of scoring separation. LeBron is too ball dominant, and Kawhi likes to score at crunch time.
The notion Kyrie would go back by the way to an even worse situation is ridiculous to me, and not even worth debating about.