Peteski: I agree, and it's good for the companies as well. They can get ideas, delivered straight to the people responsible for dealing with them, without having to dig through all of the other mail. And, if they have questions about the idea, contacting the originator is just as easy. Plus, on sites like this, they can also get market info on the idea at the same time, so have a better idea whether it's worth pursuing.
In this case, a longer shank coupler sounds like a good idea, as they're fairly common on modern prototypes.