Bounty systems have been discussed on kde-core-devel a number of times.
There where numerous problems which couldn't be solved, like who decides if it meets the expecatations, etc.
As for the connector, I read in a news article (on the dot I think) that Tobias König wrote a proof-of-concept implementation during one of the latest Linux exhibitions.
You could contact him and ask for completion offering the money directly
cheers,
_