Wouldn't dream of it.
I can't speak to SH4's animation, since my computer won't run it (yet).
The problem with making something like the engine or torpedo rooms is that it would be a huge amount of work (for the publisher read "money") for something that's basically useless. By that I mean that the only reason to ever go there would be just to look at it; you wouldn't really do anything there.
Maybe someday the entire interior will be modelled, but I wouldn't hold my breath. Maybe they could design it so extra rooms could be added by modders - let someone else do the work.