I'll really be interested now, to see how things turn out. After doing some research on what I want to do with his iMac, and then setting up a dual boot between macOS and Linux, after finding out I could do what i wanted in Linux with gaming, and backward compatibility, from there I was able to to find the same open source tools for macOS and then I was able to change my macOS usage habits correcting the issues I was having with Open core and the software I was using before. So I'm giving the new setup a test with Sonoma / open core 1.5.0. So far, the only remaining issues I have, which are minor, are Sonoma specific (not open core) as in when I looked up the issues they happen on supported machines as well. With that said though, it sounds like Sequoia is going to be promising.