Quick recap:
OUT: Paul Pierce, Kevin Garnett, Jason Terry, DJ White, Jordan Crawford, Rajon Rondo, Jeff Green, Doc Rivers
IN: Isaiah Thomas, Jae Crowder, Tyler Zeller, David Lee, Jonas Jerebko, James Young, RJ Hunter and Jordan Mickey
IN: Nets '16 first, Mavs '16 first, Swap option for Nets '17 first, Nets '18 first, Grizzlies '19 first
IN: Sixers '16 second, Wolves '16 second, Mavs '16 second, Heat '16 second, Cavs '16 second
Wolves '17 second, Clippers '17 second, Cavs '17 second
Considering age factor, Ainge won only players trade. And on top of this Danny got 4 first rounders (i believe at least 3 will be in lottery), one valuable swap option and 8 second rounders.
I give him A+