Re: concept art and set photos!
Between Worf having compatible ribosomes with Romulans and the Klingons in the new film having pointy ears: I wonder if the case could be made they all share the same genetic heritage? Perhaps the Preservers were involved seeding one planet with inhabitants from the other?
"...the most elementary and valuable statement in science, the beginning of wisdom, is I do not know." - Lt. Commander Data, "Where Silence Has Lease"