Bally tried on several games. I believe there were a couple of plastic playfileds on a couple of the Kiss prototypes with the speech.
There were issues I am sure why it was never brought to production with several attempts.
I personally think heat would be a big negative...most of us have seen smoke out of a machine...imagine a coil or something melting your playfield. I have seen melted inserts so not a big fan of my whole playfield melting.
With current options Wood is still the best...