Thank you mrrabbit, HillRider, Marcus Ti, and ShyDog75 for your input and valued advise.
I am following up on the 'claw (No! Craw*) mount, and universal derailleur hanger ideas.
I have already sent this info to a friend of mine who is a retired cycling mechanic, to get his opinion as well.
Thanks again.

* Maxwell Smart always called the 'Craw' the Claw, and drove him mad about it.