I feel like right now, even with the much needed key binding, the controls for a big and sophisticated machine can still be very clumsy and make it very hard to control something.

So these are the ideas that I have came up with:

1. The ability to add more controls to a single object.
This may seem like it will make the machines eve harder to control. But actually if you are talking about making sets of simultaneous movements for something with many possible angles. Think about a limb thrusting a sword. If you have 4 parts controlling rotation, opening and closing the arm, if you want to achieve something very variable (Making it thrust a sword and still be able to swing it at different directions) you will need to start remembering lots of combos you have to push. If you can assign more buttons (preferably also allowing you to set different speeds for each) to each component, you can do many actions pressing a single corresponding button.

2. An 'Activation' block
The block would activate anything touching it, and should be able to be turned on and off. this would help with making things activate at the right time every single time

3. An option to turn a control to toggling.
The use for this would be on an aircraft with extendable wheels. It is very annoying to have to hold the one button to have your wheel down.