I would like to make these two changes to the current version:
These changes could look like this:
I am not able to make these changes on my own, but If somebody had the time to guide me, I would gladly make them, that's why I assigned this task to myself.
Moving things around in the UI is easy. The relevant file is in <KWin repo>/kcmkwin/kwincompositing/compositing.ui You can edit that file graphically with QT Designer. Creating a new item in the UI is also easy. Wiring it up to do something will be the trickier part, but you can just follow the example of how it's done for the other items in the UI.
This isn't really something that merits a whole phab task though IMO. Can you re-open the request as a bug report on Bugzilla and ask for implementation help as needed in the #kde-devel or #plasma IRC/Matrix channel?
That's my fault, there's been a slight miscommunication.
I got a bug report saying we should move one combo box.
I would rather open a discussion about redesigning that KCM and have a full cleanup of everything as part of the general system settings rewrite we've been doing. I sent mthw over to phab to start that.
So, it will be best if you created the task yourself (complete redesign), added everything you have in mind, and then I can add my ideas, right?
Oh I see, my bad. I do see that we don't have an entry for the Compositor KCM on https://phabricator.kde.org/tag/plasma_kcm_redesign/.
I made a task for that: T11785. We can do the discussion there.