My Idea for layout NOTE: My layout is more for playing a game and less on building.
A: Jump
B: Crouch (toggle/hold not sure yet maybe so it'll be easier for controllers)
X: Reload Weapons, Hold X to drop weapon
Y: Swapping items/weapons in the Tools list
Right Trigger: Shoot
Left Trigger: Plant a brick
Right And left bumper: Used to move left and right in in the brick inventory and left and right in the paint inventory.
D-Pad: Up is to access brick inventory, Left is to access tools, and Right is to access the Paint
Left Stick: Player movement
Right stick: aim movement and up/down in the Paint section.