Yo. Extremely grateful for this amazing piece of work. However, here's my two cents:
A recent update added a physics infuser block, to help with performance on large ships.
The tutorial for said block also said that, contrary to popular belief, large empty sections of ship tends to lag more than if they were filled with rooms!
Perhaps you could attempt a 100% Titanic, complete with ALL of the interior? If it ends up lagging more than it's worth, I won't be mad...
Either way, thanks so much for this ship and keep up the great work!!!