The position of the bars will depend on the overall setting of the Aerodrome Ground Lighting system - the entire operation of the system would have to be changed to Cat2/3 for those bars to be illuminated. This would cause various problems with the lights if you were not in cat2/3 ops, especially on easterlies.
This would also change all of the wigwags all over the airport to the cat2/3 positions which is undesirable if you are not in cat2/3 ops!
I agree though that it isn't brilliant human factors to have you hold at one place but the stop bar be somewhere further along..