Regarding runway incursions. Those happen at the mic switch, not at the light switch. The runway incursion happens before any extra lights will save your skin.
Negative. Use your eyeballs, not your mic. Too many people think that looking for other traffic and preventing a traffic incursion happens on the radio, and it doesn't. The first and last line of defense is in your skull, on each side of the bridge of your nose (or in the case of george bush, directly adjacent to one another).
While awareness of clearances is important, being aware on the runway is equally important. One person makes a wrong turn onto an active runway. One person is cleared to land and the other takes an inordinate amount of time getting off the runway. You might say that safety is the controller telling each party what to do...but at the end of the day, the controller goes home and feels bad, while the parties involved get buried and feel dead.
Those who can, do. Those who can't, talk. Too many people believe that the radio is there to find traffic for them. Not true of the TCAS, not true of Com 1 or Com 2.
As for the " I don't wanna get hit while sitting in position" reasoning, why don't you just look towards the approach path as you enter the active for position?!
That works well if you're in visibility that enables you to do so, and if you're going to be departing immediately, and there's no traffic crossing intentionally or inadvertantly downfield, and no service vehicles that make a mistake...but ground incursions happen all the time. Never intentionally.
How many times have you been cleared to position and hold? Ever had traffic cleared to land on top of you, or cleared to land on a parallel runway and take yours instead, while you're in position? I have. In addition to seeing, I plan to be seen. Be conspicuous when you're on the runway. Everybody and their dog is either trying to land on it or cross it; it's the most likely place in the world for traffic to try to violate some law of quantum physics and occupy the same space at the same time. Look like your life depends on it, and make yourself visible to others trying to do the same thing.