Finally, I had some free time and was able to implement a solution for myself with
Hammerspoon (which is kind of like AutoHotKey for macOS).
Here you can see how it works in action:

- davici-resolve-move-playhead-to-cursor.gif (819.75 KiB) Viewed 22658 times
This is far from perfect and I probably need to make it a bit more robust over the coming weeks as I use it myself. But it's already pretty good in terms of performance.
The solution works like this:
- When you open or switch to Resolve, Hammerspoon runs a Node.JS script in the background which takes a screenshot and locates the Timeline View Options Icon (this is done on window activation rather than on click / keypress because at this time, this opencv script takes about 1 second to load).
- Once the position is determined, you can click into any empty areas of the timeline and the mouse will jump into the time area to start dragging and then it already comes back to the starting position so you can simply move it left to right (I determine that the cursor is in the timeline by color matching).
- Alternatively, I can press "s" as a keyboard shortcut to make the playhead jump to the mouse pointer.
This idea was heavily dependent on something I already was doing with Premiere Pro for the past year or so, but there I did not have to "locate the time bar" and instead was just able to call the "Move Playhead to Cursor" keyboard shortcut.
I would obviously still prefer this to be actually implemented, but long and behold, there are solutions now for
Windows and for macOS.
Let me know if you are interested in this and I will try to make it available on GitHub in the coming weeks.