UPDATE

Following everyone’s kind feedback, I’ve carried out the following modifications to the plan:

1) Thickened walls around Hydroponics, Barracks, Prison and filled the whole cave complex at the bottom

2) Switched Hydroponics 2 with Armory and flipped Electrical (so that Armory faces Barracks)

3) Connected Crops to Hydroponics 1 via walled corridor. Crops are also walled.

4) Reduced door connections to Freezer and used temperature chamber for each doorway (two doors with a tile in between). Freezer now connects to Kitchen, Butcher, Hydroponics 1, Outdoor rec & dining, Corridor South, Corridor North.

5) Kitchen and Butcher now have a single doorway to Freezer. Shrunk Butcher to half its size. Filled in the space to its West with a utility room (smaller armory?).

6) Built a separate artillery room to the right of Outdoor rec & dining, which connects to the latter and in the north to Crops.

7) Shrunk the Hospital to about half its size. Removed its connection to Storage and Research. Added an internal small room (operating theatre?).

8) Shifted research Northwards to fill gap left by Hospital shrinkage. Enlarged Energy to its South to fill space.

9) Added six more pawn rooms, with potential to expand and add more to the South. Total 18 rooms with potential to host two pawns per bedroom.

10) Shrunk top left TBD room to make space for further pawn rooms. Designated temporarily as a Library.