Gamepad binding didn't even cross my mind! My apologies! I usually use Unity's New Input System, which I would've added gamepad support with it, but I decided to forego it for simpler options. The idea to make the HUD semi-transparent is a fantastic idea. Wish I would've thought of that!
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I totally hear you on the New Input System and simpler options. I'm new to Unity in general, but [on my own game] I was struggling to capture touch coordinates with the new input system. So after a bit of Googling, I just wimped out and read mouse coordinates directly. That's what v1.1 is for, I guess. :)