I'd like to see a few input pins on the tinyg board to attach stuff like a physical "feed hold" button, "cycle start" button as well as a few other inputs that could be used for things like "enclosure door sensors",etc...
I think it would be great to have a couple "generic" input connections and a few pre-defined "generic" functions that could be set for those. Like generic function "door sensor" would disable motion/spindle when triggered or something like that.