Suggestions

@Ailab.

Probably no to both unfortunately Hull is expanded outwards, removing the hull wall only when the next outer piece is done.
And artificial meat can be cultivated (grown).

I have seen that the exterior wall transforms to an interior wall when the player expands the hull and there is something on that wall. I thought: It would more realistic if all the exterior wall transforms to interior wall expanding the hull, and also convenient (bc the player will not see that his ship is leaky and have no extra task to build a wall - before expanding the hull - to forego the gas bleeding)
I think this suggestion:
   is not hard to code
   will not make harder the gameplay
   but make the game far more realistic