The Nu class shuttle needs to get some more serious screen time and/or interaction with the main characters in order to justify the toy. So far I think we've seen Ahsoka get ferried in one, the Clone Scouts travel in another, and Cody and Rex fly one during the "Rookies" episode.
I totally think it's a very cool design. It blends together the Imperial shuttle concept with the Republic Gunship. And it seems like it's a ship that can fight. It would probably make an awesome toy. I think it just needs more screen time first.
And I hope you're right, Piet, and Hasbro is playing coy about the Twilight.