I'm getting excited about this offseason. Lots more shaken up than I expected.
It's officially draft night predawn

and we've all heard Miami may be trading back, which is surprising to me, because I was sure the pick was gone. If we do lose the pick, I really hope we buy into the second round. I know many here believe player development is done, but I don't think so, and there are a number of players I like who will no doubt slip. I still think it's possible (even likely) that Miami is actually drafting a player for another team with the FRP, so I'm not going to get too excited until things sort themselves out. A SRP though will probably be one of our players.
One problem for the Heat to do a deal may be that KO has until 5 PM Thursday to Opt-In. If he does opt in to his $13.6M contract, he can still get MLE in the market and that's $10M, so he has some leverage. If he opts in, he will likely get traded. If he doesn't opt in he can pick a team himself and maybe not end up in WAS or SAC or CLE.
Aside from KO, the Heat really don't have much trade ballast. An S&T for DJJ or Jae Crowder or Meyers Leonard is possible. Hard to imagine Meyers Leonard getting a 3 year deal for $$$ but who knows? These players are all UFA and Miami has their Bird rights. Dragic has a market too, but an S&T will not happen because I doubt at his age he will get $$$ money for 3 years.
I would have thought there would not be that much going on, but there are few teams with cap space because everyone planned to have more, and unintuitively the constriction has led to GMs having to build their teams creatively. Without renouncing rights, Sacramento is the only one with sizeable cap space and I don't know if they do after the Bogdanovic trade. I would suspect it's been quite narrowed.
Other teams (such as the Heat) would have cap space if they renounced all their cap holds:
https://www.spotrac.com/nba/cap/It doesn't look great for players in trying to sign as free agents in this market so an S&T would be a boost.