In order to build around & win with Giddey, you're going to have to have elite off-ball defense because his biggest flaw is that he is going to get cooked against elite SG's in half court sets, especially on man to man defense. Your 3, 4 & 5 need to be tall, athletic and also be flexible: moving off the ball, scoring in and out of paint and rim protection from 4 & 5, especially shot blocking. Giddey is a decent help defender though.
Offensively, Giddey can provide the team with decent scoring, everyone will get shots and the offense shouldn't become stagnant. Giddey had a problem in OKC gambling with dangerous passes that resulted in TO's; I haven't watched him play since he left. It looks like he has grown in confidence shooting the basketball, so that is a plus. He also rebounds too.
Dallas (Luka era) team would be a lineup where Giddey would flourish. I understand where Bulls fans are saying that they are a lottery team with Giddey, but that is more of a Bulls management issue.
I wouldn't want to see Giddey on a team like the Spurs, Memphis, or really, any contending team. They'll figure out how to use him.