The viewscreen itself is canon, but the walls surrounding it are a little different than what we saw in Space Seed. I've made it a bit more symmetrical, and had to adjust it's length due to the season 2/3 version of the briefing room being 2 feet longer.
Thanks for the clarification, I was wondering for a split-second.
I believe the viewscreen was modified and moved to the Auxiliary Control Room set beginning at season 2, so, as far as I know, we don't see this wall as part of the briefing room past season 1 (unless anyone knows otherwise).
I'm just curious: Do you already know when you
are moving the viewscreen to the Auxiliary Control Room?
I've heard some wild rumors that some other Trek BBS members are trying to decipher the layout of the Auxiliary Control Room. Is there a possibility you guys can share what you have deciphered thus far. I think it would be really great if synergy potential were fully exploited.