Once you upgrade...another 5 minutes of two-engine taxi or 10 minutes of early APU start on every flight for the remainder of your career should put a dent in their $4000.

You might not have the money...but neither will they.

But soon, I'm sure they'll use Big Data to beat us down. Another year or two--in fact, probably just in time for the next Section 6--and captains will be getting pinged by the CP: "we see your APU burn time is 20% higher than average for this temperature on this aircraft at this airport. Why don't you take a week off to think about it?"

...and ALPA will threaten to think about possibly considering a weakly worded letter to explore the possibility of a grievance.