Again,you will destroy your center differential if you run badly worn tires and good tires mixed together on an AWD car,it does not matter what the power split is,it is universally a bad idea. You want all the tires to be as uniform as possible,if you get new tires and have an AWD car,don't be cheap,get 4 good tires. Also,on a dry road the worn tires will have more grip as they have more contact area with the road,why do you think they use slicks in racing?
I don't drift I waft to work