I'm happy to see this post, because I was almost second-guessing myself on my open front coop. Mine doesn't really look like any of the coop pictures I've seen on this site, but I think it will work for us. It's still under construction, so don't have any finished pictures, but here's what it looks like so far:
I wish it was done so you could see it. The front will remain open most of the time, but will have a flap that can be folded down if absolutely necessary. The roof will be several inches above the walls for ventilation at the top (gaps covered with hardware cloth). It will slant to the back so rain water rolls down and falls behind the coop. The run will be secure and 6 feet tall, with electric fence wire around the outside of the run and coop to keep predators away.

I wish it was done so you could see it. The front will remain open most of the time, but will have a flap that can be folded down if absolutely necessary. The roof will be several inches above the walls for ventilation at the top (gaps covered with hardware cloth). It will slant to the back so rain water rolls down and falls behind the coop. The run will be secure and 6 feet tall, with electric fence wire around the outside of the run and coop to keep predators away.