Miami seems to have jelled as a team. The Celtics seem to have become unjelled--probably due to trading Perkins. I always thought their starting 5 had great balance. Ainge screwed the pooch trading Perkins, a starter, for two bench players. Funny, Ainge, a starter, was traded from the Celtics in the 80s for bench players: he made the same mistake as GM!
What you hope now is Theo hasn't screwed the pooch signing too many left handed hitters, while letting two right ones go.