I think picking barnes makes a lot of sense for the cavs. Two words: floor spacing. One of the reasons kyrie was able to have such an amazing rookie year was that jamison spread the floor and took a man out of the paint. The cavs will not have that next year. Barnes is a very good shooter, and he will be able to at least provide some spacing.
Look at tristan. He is a hustle player, plays his heart out, good offensive rebounder, good defender, very athletic, hard worker, good character, can't shoot the ball at all.
Then MKG. Hustles, plays super hard, very good rebounder, very good defender, athletic, very hard worker, leader, can't shoot the ball.
Frankly, a MKG - TT - Andy frontcourt would provide extremely little spacing. None of those players can shoot the ball at all.
It is also quite ironic that people would rip the cavs for taking tristan because he cant make a shot, then turn around and suggest MKG.
Id still take MKG because at this point in time the cavs cant draft based on need. Also, MKG is only 18, and his shot will definitely improve imo. But barnes definitely makes some sense. This is also really early, so it kind of seems like a smokescreen.