I don't think it matters that much who is in charge. The fact remains they have no reason to totally bottom out when they don't own their own draft pick in 2015-2018 (Atlanta swap, Boston, Boston swap, Boston) or whenever it all ends. The teams that are at the bottom and have a realistic shot at a top 3 finish in the lottery are there intentionally. If you have the cap space and the intention of not being horrible it's easy to avoid being at the very bottom, especially in the horrid East. That's why I said the Celts best chance at a top pick from the Nets is in 2016 when they will still be saddled with the Johnson, Williams, and Lopez deals or whatever pond scum they can acquire in a deal for one of those currently low-valued assets. After 2016 Lopez and Johnson will be off the books and they will finally be under the cap, in addition to the expected cap rise they will be in a position to spend. Now, they will probably be rebuffed by the top free agents because the team is bad despite being in a good location but with no tanking incentive they will probably just overpay whichever 2nd or 3rd tier FAs they can get their hands on. That may be enough to ensure mediocrity as opposed to outright sucktitude that we would need to get a top draft pick back.
2016 is our best shot but obviously a lot can happen between now and 2016-2018. A devastating injury or two always helps too. Barring that, I just don't think it's realistic to expect a total collapse. More likely the picks end up in the 8-16 range. That'd still be a pretty great return but lets pump the brakes on the top 3 lottery picks in 2017-2018 talk.