Hi Hermann,
Wow that's quite an extensive page that you have there!
For years we have been tossing configs, icons, and layouts in the wiki but this is hardly maintainable so I have been working toward a better solution.
Ideally, we should be able to download extra osd or map layouts that match your device's resolution directly from Navit. We're not quite there yet but I think it should not be too difficult.
To allow this, the best way IMO is to have a way to package extra ressources in a comprehensive manner. One (not the ultimate, but a proposed approach ) is to package the ressources in a github repository for example.
This allows us to :
- fork easily ( if you just want to tweak the work from someone else )
- test easily ( we can build automated screenshots of how the layout / OSD will look like )
- package easily ( we can build a zip, or any kind of archive automatically )
- deploy easily ( navit can poll the available archives )
This is not perfect, as it requires people to use a versioning tool. But in my opinion, using the wiki for that is hardly better.
As an example, here is an automated screenshot built for my own layout + OSD :

(you can see a small defect on the "3D" icon, i need to convert it )
The generation of the previous screenshot is fully automated, including generating another screenshot where no route is set.
As an example, I have started moving the OSD of Urfin78 here :
https://github.com/navit-gps/navitosd-1I would be more than happy to help you get started if you want to try this. You can ping me on
IRC and we can do it together, until we have some documentation in the wiki.