How the heck did you run out of TKS fluid???
I agree though- they could have at least upgraded the pressure control unit.
NJA has the big tank for fluid. I think it's about 102 minutes max, depending upon how long you use the high rate. Flew from LGA to Cleveland Lakefront and back, with icing along much of the route. None to be found in Cleveland, believe it or not. Got the low light on final into LGA. Not a comfortable place to be.
Although a rare event, the engines have been upgraded numerous times since that wing was designed, and several upgrades ago the jet could have handled a hot wing. You can only continue using old technology for so long before buyers will shop elsewhere.