I agree Zuzu, I am not a fan of the thumbs up in the pending queue because many end up with multiple clicks before being approved and then it pops into a top position and now when you scroll through the genus of Rosa for instance, there are some that have photos of foliage as the main image.
I prefer someone seeing the newest image only having the option of clicking on it to bring them to the entry where they can see the entire selection of photos.