Working for/with publishers is a long-time and confidential process.
The best way is to support the publisher with a quality he can sell.
Then he don't try to assume/adapt you "genius" ideas.

Try to contact new publishers with eyecandies and advertise your game.
Don't tell him too much or too less - wait for his replay (and hope you can send him a demo/storyboard/synopsis).

We are part of the casual games market with many many many many many game designers (and even more ideas).
(In the most cases I think my ideas are that unique and ingenious, but after a small reasearch they're not )