This roster is guard heavy. It's been guard heavy since the beginning of the season. Rondo, Bradley, Lee, Barbosa, Terry... all of those guys are quality talent. Rondo gets about 43 minutes a game come playoff time... which left a total of 53 minutes total for the other 4 guards.
If I were to get into Ainge's head...
Plan A was to trade a couple guards, a couple draft picks and Bass for an immediate big man upgrade... Al Jefferson, Josh Smith, Cousins etc.
Plan B was probably to trade Rondo for a big and let the rest of the guards split the time.
The injury just resolved a major roster conflict... freed up minutes for our quality guards to step up and have more defined roles (Barbosa now being swapped out for Crawford)... In addition, it made the ball flow through our best offensive weapon, Paul Pierce, who has been remarkable since Rondo went out... someone post his stats since Rondo went out... he's upped his assists and rebounds... it's a role Pierce had with the Celtics up until late 2009 and he's proving he's still able to do it. It also allowed Jeff Green to have a more defined role and use his talents appropriately. He's been outstanding.
All of this stuff contributed to our team's improvement. But there were three other effects of Rondo going down. #1 - it allowed guys to share the ball and have our offense be less predictable. We have multiple guys who can create and now they are getting the opportunity to do just that. #2 - Rondo's somewhat of a liability without the ball, because teams don't respect his shot. That means that when Rondo didn't have the ball, it put more defensive pressure on everyone else, because Rondo's man would slack off. We now have more offensive weapons on the floor at the same time. #3 - Bradley and Lee are clearly our best defensive guards and now they are starting together. More importantly, it moves point-guard sized Bradley to point guard. He's not a shooting guard. He's best used as a stopper for other point-guard sized scorers. A beautiful example of that was against Steph Curry and the Warriors... I think we would have had Bradley on Klay Thompson and Rondo guarding Curry ... and I'm not sure it would have worked as well. Thompson has 5 inches and 25 pounds on Bradley... I much prefer seeing Lee guard him and allowing our best defensive point guard play the point guard position.
All of the above contributes to us clearly playing better without Rondo. BUt that doesn't mean Rondo is a bad player. Rondo is excellent. This team is just built to withstand losing him in a big way.