The problem isn't primarily the total fleet mileage or electricity though is it, as these would increase only by a small margin to cover empty stock and so on. The problem is that the availability to do maintenance would decrease. That's acceptable for leaf fall as it's pre-planned and time limited, but to offer it year-round would need extra resources at different times to make up the shortfall.Yes, absolutely correct (you can tell I've never been a finance person) - the actual mileage will be the same as it's the same timetable, the only additional cost will be the electric for units stood on increased dwell times, plus the transit to the depot.
So really you are only looking at a bit extra on the crew bill.
My guess would be that there's probably a contractual element on unit availability and the timetable being built around an expected level of performance from the units, that for whatever reason, isnt being achieved. The fix to this problem is both cheap and simple enough to implement (and is the case in Autumn anyway), so there must be a reason not to do it.
