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Transparent Background.
I personally think that there should be a Mod for a Transparent Background. The reason I think it should be a mod is so that you can change which parts have Transparent Backgrounds. For example, the mod can have a dropdown to with an on/off setting for Pausing, Inventory, Chat, etcetera.

Thank you for reading this thread, "+1" if you think this should be added!
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You can do that yourself with a custom resource pack.
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