This is absolutely right, and wlroots is not a fix once you already have 2 implementations Once that ship has sailed, what you want instead is a shared method

This is absolutely right, and wlroots is not a fix once you already have 2 implementations Once that ship has sailed, what you want instead is a shared method of providing configuration. The goal is to have all 3 implementations read configuration (like DPI scaling etc) from one place. That way the user won't have to configure common things in 3 places to get any semblance of apps looking remotely close to eachother.