Luzardo screams "flames out in a few years" to me. No thanks, or at least for what he'll cost. Robert has played literally one full season of baseball in his entire life. Again, too much risk and no thanks.
Crochet would be a good target, because we get him for 2 1/2 years and is an elite lefty. Given where CHW are, a package with Kjerstad and one of our young pitchers (headlining) makes sense for both teams.
If we are forced to effectively give up on Mullins or Hays (either BC of injury or general suckiness), Taylor Ward does make sense. His name has been tossed around a lot. His splits playing against AL East teams kinda scare me, but he's a RH bat that can play good defensive OF and under team control for a few years and probably won't cost much.
As for bullpen arms, this seems like the hardest to predict. CHW doesn't really have anybody pitching well there. The Marlins have our old friend Tanner Scott, but he isn't anything near a sure thing like other experienced closers. Mason Miller will cost too much. Chapman may make sense if DC is out. As a 36 year old rental he won't cost as much, which will be important if we go all in for a starter. His wildness will make our blood boil but he still has the swing and miss stuff and obviously a ton of playoff experience. Maybe Beeks from COL? Another lefty bullpen rental.