Actually, used in the right context and role play, the masturbation poses, can be very very hot. Remember, the only thing that stops you is your imagination.
I masturbate for my man using them, much in the same way as the lap dance pose, to tease & tantalise, and we usually end up having smokin hot sex ... yeah baby
A Peeping Tom pose or voyeur room would be interesting perhaps for some.. I doubt I would use it, some things are just for me and my man. But I think some people would like this and would support such a pose .