I have been using MATE with Compiz for a long time. I'm also a huge fan of wobbly windows. However, due to the concept changes in GTK3 and 4, Compiz is not fully compatible with these applications, and it's a bit buggy because it's also quite old. (I tried using gtk3-nocsd, but it didn't work well.)
I recently tried Marco, and it was really nice and error-free. However, the only problem is that it doesn't have wobbly windows. Will Marco have features like this, or is there another WM that works with MATE and has wobbly windows?