Adding app icon variations for iOS and iPadOS would allow for more customisation options for Orion to make it even better. As iOS and iPadOS already have support for changing the app icon, this should not be too hard to implement. Attached is a example for what kind of icons the browser could have.(the app this is taken from is scriptable on the app store)
This could be implemented as an option in the apps settings menu like in the app i mentioned.