Which, I'd say, probably goes right to the heart of the matter, Maxwell E.
Other than the computer industry, which likes to use new connectors every few seasons to create compatibility issues with older gear to ensure new sales, most of the rest of the electronics field tends to see compatibility as a positive feature.
So, unless a new connector can be shown to be radically superior in function and/or price, enough so to risk incompatibility with traditional standards, it probably is not going to happen.