I'll pass this information onto them
One thing i have to note on, pro photographers don't regularly pose their models. In the real world (Advertisments, and such) they use to real models who have practiced their poses in the mirror on their own. That's why model's in advertising get paid so much.
Then you've got the stylists who worry about every hair being in place, and all the little details like that - SO it would be a good idea if the cosplayers were rehersed in what they wanted to do, and came equiped with ideas of their own on how to pose.
Sure, the photographer can suggest stuff, but it shouldn't be their sole responcibility - otherwise you're thinking of a "school photo photographer" who moves "your chin just so", and "your arm a little to the left" for one of those generic, uniform poses
It's not that they are "Too Shy" to say anything, (I'm sure that if they have any suggestions for improvment, they will voice them, but) it's just, That's not really THEIR job. That's the Model's job.
If my guys did it, they'd be expecting to see some enthusiasim, energy, and creativity from the cosplayers posing. You might wanna pass that message onto them
Also, you might want to come up with a few location Ideas yourself too. I'm not saying that they can't think of any but, really it's Your photoshoot, they're just the one taking the pictures. Where do you envision shooting this?
I'll ask them if they have any ideas though.
And, don;t worry about the quality of the cameras - state of the art, top of the line - all of it. Plus my boyfriend is a Photoshop master! It wouldn't be a problem to get down the Sin City style.
SO, i'll pass on the message and see if anyone's interested.