Hello, I'm back.
Because some of you asked, here is the Kadee coupler I used:
Here is a side by side with the Gilbert type:
Please note that the "trip pins" have been removed; I've never been into the magnetic uncoupling feature, so those pins are not needed...for me, at least.
Also, when I started this thread, I wasn't advocating anything: I'm perfectly satisfied with the Gilbert couplers, both knuckle and link. I was merely musing...
Mark in Oregon