How cool would it be to play rimworld on multiple screens?! One (or more) to display the main view. And a second (or more) for any kind menue that you wanna have permanently on screen. Might be beyond modding
I have a steam account but for any strange reason I'm not allowed to comment anything inside the workshop. I read it's just allowed if you've ever deposited sth, so I asked a friend who did but he couldn't either^^
It doesn't work for me either - same error. This feature might have been removed with 1.2 update?! Cannot say more atm. Maybe you can contact the creator of the mod...
Yes, depending on your computer skills, it may be advanced and time consuming... But in theory: Go and look after mods that do patching - a lot of them do; source code and project files are often included (Visual Studio). Open it - try to understand what's going on - and adapt it to your needs.