There are a few teams that come to mind when talking about being a disappointment.
Sixers will probably be another 2nd round exit with or without harden so is it really a disappointment anymore? this is who they are
Clippers will also most likely be an early playoff exit when Kawhi and/or PG gets eventually get hurt. Or westbrook boneheaded plays costs them games late in the 4th.
I dont know what people are expecting from dallas. Got a superstar in Luka but Kyrie has got to be the most destructive player in NBA history. He will somehow implode this team. Cant figure out exactly how yet.
I think the Suns will be the biggest disappointment this year. They are one of the title favorites. However this glass cannon build wont fare well in the playoffs. I can see a big physical team like the Lakers dominate in the paint and knock them out. Sure the big 3 can put up 90 but it wont be enough.
I'll throw this out there though I don't really believe it.
Nuggets.
The case: Matchup wise the playoffs really broke for them. If they have a weakness it's quick guards especially ones who can shoot who can make Jokic switch out onto the perimeter and somehow they avoided every single one of them and instead mainly played teams built around big men and wings.