Some thoughts.
I haven't seen Fultz, Ball, Jackson and so on play consistently. In Spain, watching the NCAA is almost impossible. So I can't say if Fultz is a generational talent or the gap among them is too high to make this deal or not.
Said that, the feeling of a pre-arrangement with Hayward/Griffin, which has always seemed obvious to me when we stood pat in February, is confirmed. Trading down and not taking players in return means creating more space to be prepared for this maximum FA to be signed.
Also, I don't know if there are moves pending after trading 1 for 3 in this draft. As it's been suggested, I mean Butler, George or a hidden name. In Ainge I trust, really. So I just want to wait until the day is done and we see if this trade is finalized, or others, before entering panic mode. And all of you should, too. We are reacting over rumours and don't know the entire plan. And if Ainge has proved something in his 15-year span in our FO is that he always has a plan.
I don't want to give up this year's 1st and 2018 Brooklyn pick for Butler or George. This doesn't put us ahead the Warriors, even close, but we are trading our future to contend in a very hard period. This would be the worst possible move, in my opinion.
If this happens, what really worries me is the Philly team for the next decade, provided they are more or less healthy. Simmons, Fultz, Embiid, complements like Saric, Covington or Holmes and the FA this could attract is really a serious problem.
Finally, if we get and keep the Lakers 2018 unprotected pick, I'd be quite happy. They have Ingram, Russell, Randle and probably Ball/Jackson, plus veterans in awful contracts (Deng, Mozgov). They are waiting to sign big FAs in 2018, where PG and LeBron are the big prizes. So they'll try to clean the house and trade those bad contracts with picks attached to convince teams. I think they are probably bottom 5 this year again.