From the provider perspective, I usually take candids when I am getting ready for an appointment. Or getting ready for the day. If I have to go dig in my closet to find my ...bouncy ball.... to take a picture with, I am not going to do it.
That being said, there is nothing wrong with variety! As long as it is something that everyone can post to? Ie, the girl probably already has a picture of it, or could take one easily. I have to admit, many lately were over the top... ie, man's shirt day. Not everyone even has a man's shirt.
SO.... leave things the way they are. And if you are a picture theme poster, just be nice about it. Follow the number one rule in life, DON'T BE A JACKASS!
As a fan of democracy, I say this needs to be put to a vote. And be done with it. If it is not settled soon, one of my only reasons for coming to TER will be taken away or diminished. What will I masturbate to then?

Sad face!