Good news: the OSMC Skin (Scope edition) is ready to be tested! 
If you like, you can download the skin here and test: https://collab.osmc.tv/s/B0btNQU8Y3v2zWe
It has to be installed manually via zip as it’s a stand-alone version of the OSMC skin.
Please do test and give feedback! 
Here’re some details as to how I implemented the scope version:
This is how it looks on the home screen…
2.40:1 masking:
2.35:1 masking:
2.00:1 masking (Netflix aspect ratio):
1.78:1 masking or masking disabled:
During playback…
2.40:1 masking:
2.35:1 masking:
2.00:1 masking (Netflix aspect ratio):
1.78:1 masking or masking disabled:
As you can see, there’s a new small settings dialog that allows users to toggle masking during playback. There’s a new button to access it here:
The button shows the masking aspect ratio that’s currently activated:
The other place where you can toggle the masking is in the skin settings:
