The official Discord Desktop app is very resource heavy compared to Discord in your Browser. There are multiple alternative Electron apps (ArmCord, WebCord, probably more) that prove how much of a performance gain you can gain by using a custom app. ArmCord already supports Vencord but makes it pretty limited for us. Making our own standalone app gives us much more control.
This is just a random idea I (V) got, and might not actually ever be finished heh