I think there is some confusion for me on the thumbs up feature when used in the pending area. If I see a really great photo of say a leaf, seed, but, thorn, etc, I want the person to know that I really appreciated their photography. Not all photos are created equal. : )
But I sure wouldn't want that photo to represent the plant itself as the thumbnail. I agree with Sue, I want to see a page showing many cultivars with the photo that best represents that plant.
That is what draws me in and when I am search for a plant that is what I want to see.
In Sempervivum I would want to see the plant showing it best attributes, not the flowers, which I do think are wonderful. But that's not what people are looking for when searching for a specific look in purchasing a new sempervivum.