Hear, hear on the maintenance. Maybe I'm a little weird that I find maintenance tasks (of all kinds) exciting. But I can see the Work Weekends settling into a "ping-pong" type of arrangement, where one of the two (say, SWW) is allocated exclusively to heavy maintenance, and the other is allocated for capital improvement-type projects. Or, each WW is split 50/50.
New track is deceiving because it's all brand-new and beautiful. But that only happens once. If the lifespan of a crosstie is 10 years (just guessing a number), then we need to replace 10% of the ties per year, every year, forever. Persistent slow orders are insidious.