From everything I can tell, there are no switches available anymore that will fit correctly in the existing holes. Therefore I will pick new switches, and either make adapters to make new switches fit, (likely) or a new panel from scratch. (less likely)
The whole idea was to find switches that fit, so that I didn't have to invest a lot of time in this, because my time is not my own these days. If it was, a new machined aluminum, SS, & glass fabrication would be likely.
At some point, I will remove the broken plastic, and clean up the indicator lights and such, and cover with new plastic.
It don't have to be pretty, we ain't building a church here.
Thanks for all the input!