Another website I frequent featured a guy's build of the Type VII. He didn't do any interior, but he did spend a lot of money and time on etched-brass detail parts. All the grills, props, torpedo tube interiors.
I've owned that one for years, and yes you should see it. It's not quite the mini-series, though - the credits are edited out to make one five-hour-long movie. That said, I think it is far and away the best version.