Implement toggled snapping of fences and watch towers.

E.g. Player wants to stack watch towers for extra height, hold X while in place mode to snap to the watch tower below for alignment. Reduce the deploy range to allow it to happen.

Implement gated peeks on the tops or bottoms of watchtower walls using the same principals as fence gates (metal wire and pliers). Could open out and up, or like shutters on a house where it splits to the sides

Implement a "Build full floor" option for watch towers that removes the hole for stairs. Eg 10 nails and 5 planks covers the hole and allows for a player to build 2 watch towers side by side and not fall through the hole.

Add a 5th option to watch tower building allowing players to wall the back side without having to use a fence (could be solved with the snapping feature and still use a fence)

Add a method to repair hammers, something along the lines of placing in a fire for forge hardening.

Implement a medium wooden crate (100-150slot storage) using 10 planks and 20 nails and a large wooden crate (150-200 slot storage) using 20 planks and 40 nails.

Potentially add in a door kit, essentially the same as a fence kit but smaller, maybe 1m wide and the same height as a fence.