Replacing the holes with touch screens would not only make the game less fun (contestants wouldn't be able to "punch" anymore), it would also make the prop horrendously expensive to maintain. I mean, would YOU be able to keep your cool and not "punch" a game that was called "Punch-a-Bunch," even if the Punchboard was all touch screens? I could see an overeager contestant accidentally damaging them quite easily. (I think back to all the episodes of Stargate Atlantis I ever saw, that had big plasma touchscreens on the sets, and every time David Hewlett or someone else would hit them hard enough for the screen to "ripple", I'd cringe for fear they were damaging it). Then there's the more mundane life cycle of an LCD monitor--what is it, five years? You'd have to replace them once every so often, en masse, and that would get horrendously expensive.
We've had this discussion before about 10 Chances. So not just no, but...WAY no.