Well removing them would likely just have been more of a curiosity thing. Just like removing the back. Just to look and see, ya know
But otherwise the other speaker has a spot where the PO had some candle wax drip down on it. Which doesn't bother me so much right now (bothers the wife more) but it likely will down the line. I supposed if I screw up the process of cleaning that then I'll probably want to replace the grills. For now, though, all is well.
Thanks very much for taking your time to help me with this.