Yes, I'm referring to doing everything in my cab. My Mistercade has never been plugged into any kind of external monitor, and I can't see why I ever would. The whole point for me is to have a solution that just works in my cab.If you are trying to do this on your cab screen via JAMMA, then this is an issue.
Once you have things set I agree there's no need for a keyboard for daily use as far as games go. The issue for me is that Mister is a constantly shifting platform, with constant updates to cores and methods etc. It's the opposite of stable. And there are times when you need to plug in a keyboard to take care of stuff.
Can you pull the Mister from your cab, or plug in another monitor or do whatever else? Sure. Not the end of the world. Or it sounds like there's a USB hub solution too, cool.
I'm simply suggesting that on board support of a keyboard would make it a better product if there's ever a revision with thoughts about what to change, that's all. I'm glad to have it with what I'm using.