This team was better in the second half of the season and made a deep run in the playoffs because of two things: Avery Bradley's development, and KG's resurgence.
Would have loved Ray back for his shooting but lets be honest, this team was not a better team then it was at the beginning of the year because of Ray Allen. He barely played the second half of the year, and he shot horrible and played less than stellar defense in the playoffs.
Does he help the Heat? Of course. They are adding more fire power to an already dominate army.
Is he the difference from us getting right back to where we were last year, I dont think so.