@Gagarin - The 2nd smaller set of consoles and a ladder stems from "The Day of the Dove" and where everyone is looking towards. I'm not 100% sure I'll keep it, but there aren't any more engineering room episodes after that seem to contradict it
You can see some screenshots of that episode in this post:
OOhh... I most have watched that episode 40 times and never paid attention about which direction they were working.
Hah. I probably just thought "they should look the other way!" subconsiouslelslslry.
"If you need a holodeck to make an interstellar starship on the bleeding edge of the unknown
interesting, something is seriously amiss."
- Straczynski & Zabel