Hawks defensive issues weren't only about Trae Young. Their front-court defense is quite bad. OO isn't a good rim protector and Jalen Johnson is a poor defender. Offensively, teams will even more focus their defensive game plan on Jalen Johnson and it will be tough for him to overcome that. Dyson Daniels shooting like crap is hurting them too.
Right now, there are 6 teams that are bad and/or tanking: Pacers, Wizards, Nets, Pelicans, Kings and Jazz.
Hawks are in a tier above alongside teams like Bulls , Bucks, Hornets, Mavs, Grizzlies... Too good to tank and too bad to win a playoff series.
Best realistic case would be Hawks finishing with the 7th worst record, which would give a 32% odd of having a top4 pick.
Worst realistic case, would be Hawks making the playoffs through the play in and Spurs getting the 16th pick.