yeah thing is l1 doesn't work on custom roms anymore and you would get black screen instead of app kicking back to l3Heyo, I was wondering if this change is really necessary?
I think it is best to leave it as is (to have Widevine L1 out of the box)
With universal safetynet fix and a few workarounds you can get working Netflix HD playback (in my experience, back in the day)
If any user wishes to downgrade to L3 they can just use a magisk module or delete the file themselves