Is it not possible for the PTB to add a new gallery set-up for Poser/Bryce hybrid images? The onus them would be on the artist. If the image is a poser image, but using bryce as the render engine, then it could be posted in this new gallery, and if it is a bryce image with imported poser figures which are not the entire reason for the image, then it would still be a bryce image. I haven't explained that very well, but I am sure you can get the drift of what I am trying to say.

The greatest part of wisdom is learning to develop  the ineffable genius of extracting the "neither here nor there" out of any situation...."