I'd roll the dice on Pau if he was the second domino to fall after a move like acquiring Carmelo Anthony or some other star. At Pau's age, it'd give us a narrow window, but I could get behind he idea of going all in.
But Pau as the only domino (or even the first domino to fall, since it'd put us in a weak negotiating position with other teams), would be a bad idea.
Pau by himself doesn't make us a contender.