If the Brewers continue to falter it maybe best to trade Hader during the deadline. Something like Casas, Bello and Thad Ward for Hader should be a good return for the Brewers and is probably too much but I think Casas is a bit overrated and has a little bit less value. Plus with the deadline relievers tend to get more than they are actually worth so take Hader's value now and multiply it by 1.5 times of his current value so Hader should have a surplus value of about $50m which I think would be about what this trade would be fetching.
This would give the Brewers a 1B/DH in Casas and another young starting pitcher in Bello. If the Brewers decide to trade Burnes and Woodruff that would give the Brewers a rotation of Peralta, Ashby, Houser, Small, Lauer with Bello waiting in AAA in 2023 and Ward in the bullpen. Ward would have to be added to the 40-man or he would be rule 5 eligible. Could also replace Ward with Chih-Jung Liu.
I think that would be the best offer out there. I am not really interested in any of the Mets prospects and I don't think the Dodgers or Yankees will be looking for a closer. The Blue Jays prospects also are not all that interesting either.