This modification gives you an ability to rotate buildings. It also allows you to use hotkeys to create gates and train units from agra fort.

How to use Building Rotator: When placing a building, simply use the middle mouse scroll button to rotate it.
How to use Gate hotkey: Select a wall fragment and press "G". It will automatically create a gate for you.
How to use Agra Fort hotkeys: The same way as you do with other military buildings.