I don't know how this is exactly BYOND exclusive. Most if not all games have key bindings that allows you to switch up your controls to give you more control over your characters or feel more comfortable playing the game. Macros & Keybindings are practically the same thing, so it isn't a BYOND thing. Also, how exactly is it easier to explain things with the same controls? All you have to do is explain to them the default Keybindings, which will probably also be in some sort of tutorial when you start out.