Hey Rog,
The area is sensitive. I got myself that typical dent a few years ago. Bumped reversely yet slowly into my neighbor's Polo. (Not a scratch in the Polo). It's still there ... as a reminder.
I like your design although it doesn't solve the issue: Those brackets are weak, prone to bend under the slightest pressure and cause expensive damage to the bodywork. If they'd only be tougher, maybe rectangular/tubular....
Cheers!
