I think Hader is more than likely gone after this season it just doesn't make any sense for the Brewers to hang onto him. One of Houser or Lauer will also be traded. That should clear up enough salary to keep Woodruff, Burnes, Peralta, Lauer/Houser and Ashby as your starting 5. The bullpen should still be good with Williams taking over as the closer. If the Brewers want to keep Hader then the Brewers are going to have to rely on Wiemer, Taylor, Turang, Feliciano and others to replace all of the bats leaving.
I don't see the Brewers bringing back Narvaez as that would be extremely expensive. I think the Brewers do bring back Caratini though yes he will be expensive but he will more than likely be the starting catcher with Feliciano/Jackson as the primary backup. If you think the Brewers will drop Caratini then it is probably a resigning of Severino with Feliciano/Jackson as the backup catcher. I would rather just pay Caratini at that point.
So lets say the Brewers want to keep everyone but Caratini, Narvaez, Wong and Renfroe. The Brewers would have to replace all of those bats with someone so that probably means an offense that looks something like this:
C : Severino and Feliciano/Jackson
1B : Tellez and J. Singleton
2B: Urias, Turang, P. Reyes
SS: Adames, Urias, Turang, P. Reyes
3B: Urias and P.Reyes
LF: Yelich, Taylor, Wiemer, Davis and Dahl
CF: Taylor and Davis
RF: Wiemer, Taylor, Davis and Dahl
DH: J. Singleton, Tellez, Dahl and Yelich
That is a rather brutal offense as you are not going to know what you are going to get from Wiemer, Turang and Feliciano if anything at all. Not to mention Singleton, Dahl, Reyes and Davis are not going to be all that great either.
It just makes more sense after this season to kind of blow it up. Trade Hader, Houser/Lauer, Burnes/Woodruff and Caratini. That should bring enough back to do a soft reset where the Brewers will be competitive again in 2025. The Brewers can also get more prospects by trading Burnes/Woodruff and Houser/Lauer during the deadline.
Either the Brewers do a soft reset or basically get a bunch of comp A and 3rd round picks for Burnes, Woodruff and Hader. The Brewers may get an extra 3rd round pick for Houser and Lauer also. Optimistically that would be 3 comp A's, and 5 3rd round picks in the 2024 draft. If any of them get injured it could be just a bunch of 3rd picks or nothing. That would be a really long rebuild if the Brewers only get draft compensation for losing Burnes, Woodruff and Hader.
Here is the guide on free agent compensation going forward: https://www.baseballamerica.com/stories/guide-to-the-new-cba-draft-lottery-expanded-playoffs-and-more/