G-LOC is not the same as a black out.
I think neccesary for modelling G-LOC is modelling reasonable pilot fatigue, the depending black-out and then the loss of conscious.
Right now AFAIK we black out evertime we exceed 5 Gs (or whatever). IF G-LOC is going to be modelled it shouldnt be the same way. Pulling 5Gs for X seconds doesnt always cause G-LOC. somtimes it does, sometime it doesnt, depending on the pilot, but as well on other factors.
So, the way it is now is ok more or less.