First thing straight, we're totally not looking forward to eventually implementing a whole series of customizeable vehicles in future.
As well, your ideas sound sort of simple-minded and could for sure be done more detailed and better, like the IC Dev team would have done them if we would plan to implement a whole series of customizeable vehicles in future, which we're totally not.
Lastly, we probably wouldn't have thought about using Luminators in one of the possible equipment slots (hypothetically) to create a mobile light source of some sort and though it would be sort of awesomeness, I doubt the current minecraft engine permits this sort of stuff. If we would plan to implement a whole series of customizeable vehicles in future, which we're totally not, that is.