A couple ideas to simplify the control scheme while maintaining all desired function
Above all, a feature to rebind keys would be ideal, especially being able to have overlapping binds.
- For opening and closing boxes, instead of f to open and close, use right click.
- For throwing boxes, Q would probably be easier than G since G is a while 2 keys away from WASD and its uncomfortable to reach
- Right click to box up structures instead of B
- I don't know about late game, but early game E seems underutilized given its one of the easiest keys to press.
Also, I noticed the game was runnable on my computer again, so great job on the optimization.