macOS Mojave wasn’t originally going to run 32Bit code but Apple changed there mind and extended support it’s possible they could have done so again for macOS Catalina, hell its possible to enable 32Bit code execution on Catalina but the system missing 32Bit dylibs/drivers etc is an issue.
If you really want to help speed up the process then you know what to do right?
Go download Xcode and build a development environment and get coding. Help get more components of wine to compile as PE instead of ELF, don’t forget to write/update the tests.
Can’t code? still setup the above but compile wine from head as often as possible and report compilation issues. Do regression reports showing the commit that caused the breakage it gets much faster if you take the time to do this and verify the patch the developer makes in response resolves the issue.
To make things simple use my Port file overlay found here https://github.com/Gcenx/macports-wine-devel not had change to upgrade those to Wine-4.20 yet but I haven’t heard any issue with Wine-4.20 from my contact.
If those don’t work for you then the last option is become an CrossOver ADVOCATE for CodeWeavers and test each CrossOver Beta release submitting bug reports on as many applications/games as possible.