I don't believe that Sacramento is certain to be a bottom 5 team. They could be, but they were the 7th worst team this year, are adding the #2 pick, and have plenty of cap room. They could easily pass the Nets and Knicks and may pass the Lakers if they end up punting in free agency. It is far from a given that the Suns, Mavs, Hawks, Bulls, and Magic improve more then them and who knows how healthy the Grizzlies will actually be. The Hornets seems like a team that could go into full bore tank mode and the Cavs might if James leaves. This notion that the Kings are guaranteed to be a bottom 5 team is just hogwash. They certainly might be, but the odds as they look right now would say they won't be.
that's even more hogwash.
-Knicks should get Porzingis back so that will improve them quite a bit even if he's working his way back into shape during the season.
-Brooklyn, Knicks, LA, Chicago and Dallas are far more likely to land better FAs than Sacramento. In fact, pretty much almost any other market is more likely to land better FAs than Sacramento.
-Memphis should have both Conley and Gasol back which makes them a much better team.
-Phx has young players that are considered better than what Sac has on their roster. Same for Chicago.
Orlando has some more youth that could also improve this year.
you can't cherry pick Sac's youth as the only ones who'll be better than they were this year. All but Brooklyn are getting a top pick this year. Whether Sac gets Ayton or Doncic, they'll probably be good rookies but they'll be just that, rookies. They're not going to dramatically improve that team.
As far as bottom teams go, prior to the draft and free agency, I see Sac, Hawks, Orlando, Chicago and Phx as the likely bottom 5 of the league next year. Lakers, Brooklyn, NY are likely the next 3 but figure there will be a gap in the standing between the bottom 4-5 and the next grouping of teams.