TI really put a lot of effort into making their high volume stuff like that 1 chip. I remember as a kid opening up some TI stuff and quickly being disappointed at how there was literally almost nothing inside of them except the chip/display/keypad like you said.
re the COP410 bonded out, shouldn't be too difficult to determine if it's dumpable or not, just find pin 1 and count bond wires? I've had to do that for NES pirate cart mappers before to figure out the pinout.
