Yeah I agree there's plenty of in-film mistakes. The rec dec is a great example - simply far too big. And your take is a really good compromise, as they do have to be made. I simply say (for the last time, I promise, as I'm probably starting to sound like a stuck record) that to have two torp bays is more unfeasible than one, and that main engineering should be further back, and slightly lower.
Anyway - I'll say no more on the issue, and simply look forward to seeing the finished article.