I'm fine with this non trade.
Those cursing Danny right now need to remember that the Celtics have improved for 3 straight seasons, are 2nd in the East with a wealth of young assets, and will have a top 3 pick in the next draft with likely another one coming the following draft. This team is in great position whether there is trade made now or not and that's because of Danny.
And I'm fine with not adding Cousins. It would be an utter disaster if the Nets pick turns into a franchise cornerstone and it's given up for 1.5yers of Boogie Cousins. If there was no reasonable expectation that Cousins could be resigned in Boston, then you don't give up that asset. Especially for someone as emotionally unpredictable as Cousins.
Could it have worked? Could it have been amazing? Yeah. But too much of a gamble for me. As it was for Ainge and Stevens, too, apparently.