Great theme!
UPDATE: I consolidated my setup (using Arpicade on a vertical arcade cabinet with standard res CRT) into a much smaller mSD card (64GB --> 8GB) since I had like 38GB unused space, and now the game list seems to scroll faster even on v4. It's much better now! Interesting that card size can affect speed like that. Startup time is also MUCH faster, like 30 seconds vs 2 minutes+. This is my favorite AM layout for Arpicade now for sure. I personally don't need the extra indicators you posted above, but I am always interested in what you do with this layout. I think it's pretty much perfect now already, though.