I think the Lakers overpaid for AD. I get it, it's so they can compete for a title right when the window is open with the Warriors' roster depleted and LeBron's age probably about to become a factor. But even then... they gave up so much for one guy who has a history of getting injured.
But anyhow, perhaps unpopular opinion: They shouldn't get a third max guy (unless they are going to go very, very deep into luxury tax territory). They should get quality pieces instead.
For example they could use a guy like Brogdon - but he won't come cheap. Excellent shooter, top-notch defender, doesn't turn the ball over or need it in his hands. Or if they can get him for a reasonable contract, and it won't be as low as this year's was, Boogie; he's played with AD before and he can take the center spot allowing AD to be a PF which he prefers, and lets him not have to bang it out with the monsters in the league. Maybe a Patrick Beverly as well; round it up. Ricky Rubio as a backup PG if he'll play that role, even though he can't shoot the ball.
If they put AD+LeBron+third All-Star in front of any roster they'll crush them, but what when they need a rest? In the West's long regular season you can't not rest guys. And one injury might get you in deep trouble - like actual nightmare territory of not making the playoffs after you just traded all those guys away.