I will start with the Chris Kelly trade. He is essentially replacing Wheeler. Kelly is a guy who puts in more effort than Wheeler ever will, so that's a win. Kelly is a guy Ottawa fans like, so that's a good sign. He can score when needed and is a good penalty killer.
Now Tomas Kaberle, he is really, really going to help the power play. With Marc Savard out the power play is useless, and the Bruins add a player with 22 power play assists. David Krejci leads the Bruins in assists, but tied for second are three players at 22 on the season. That's how good he is on the PP. Joe Colborne, I hate seeing him go, but they had to give up someone.
Colborne is 6'6 and can score, play physical and is a playmaker, and was always viewed as the Bruins #1 prospect to me. He will help Toronto a lot in the coming years, and for the Bruins to give him up means they will probably re sign Kaberle.
Now for Rich Peverley, I really like this deal. Blake Wheeler was never going to work here, and as a free agent next season was going to demand too much money going forward. Peverley will not play as good defense, but that's why Kelly is here, and Peverley can put the puck in the net.
All in all, the Bruins became a better team today and a real Cup contender.