I'm not sure.
I don't have too much confidence in going for the title with the same crew and no bench. And even in the best case, the next potential dynasty is a few years away, regardless of whether DH or someone else big signs here. Free agency seems to be a fool's game anyway.
So I think Danny needs to do something, and I wouldn't be afraid of doing something biggish.
I'd lock in Jeff Green with a salary somewhere between the MLE and Rondo's if necessary. He's a solid #3 option, so lock him in. He can complement almost any other type of player/star.
Not anxious to sign BBD, but would sign him to a journeyman deal long-term (relatively cheap, below MLE) with incentives. He is good off the bench for 20 minutes. He should stay for a chance to win. Or leave. Whatever.
I give DWest a call back, too. 1-2 year near-minimum deal. He should take it.
Our starters with DWest, JGreen, and BBD off the bench could possibly make a run, but I wouldn't be afraid to use a long term MLE contract to add scoring punch to the 2nd unit or a possible starter/replacement for Ray or JO. The only C who might take MLE money is Dalembert, who might be a very good fit.
I try to keep Ray and KG around as long as possible for short money. I think they could both contribute 20 minutes/night for several more years.
I try like heck to work the rookies in...give the starters some incentive to run up the score to end it early... I think these two rooks might have some chemistry already and have complementary games...I want to see them play. And I'd like to see Avery Bradley's defense in NBA games now and then. Before pulling the plug on him.
So I see a possible very deep team built around our current core that wins with teamwork, balance, crazy depth, and players that complement each other perfectly that run at least 2 deep at each position, all coached by Doc Rivers.
