Even if just an idea for the Pokemon owners they still should have had Brock on it with Ash and Team Rocket. They already know every things going down, so why not? The only thing that will be suprising is the fans and we weren't supposed to see that, which is why it got taken down, guy probaly got in trouble for that
Like I said before, those were all posters to advertize D/P even the one with just Dawn was. This was a Leaked sketch, like I said a bit different cuz those are meant to be seen for the public but this one wasn't. See, I think they've finally realized maybe they can't do much for Brock any more after D/P. He rarley used his Pokemon, all he did was flirt and be a slave for Ash/Dawn. Set him free LOL LOL. Back on Team Rocket, maybe there still popular in Japan, cuz in the forums there kind of so and so with them. Than again, the owners of Pokemon don't care about what these forums think, just care what the fan base in Japan thinks. For all I know, Team Rocket could still be pretty big.
I think there trying to switch it up a bit, they can still advetize the girl a lot and have her do some thing else. She doesn't need to be in contests, I think a lot of us are tired of seeing the same thing with girls. Seeing a boy do them in the main group would be real fun.