DFD has a good point - there will be units, possibly not operating currently to a full 20 or 24, who will need enhanced manning under the new struture. If they're currently manned to 3 FTE and maximising their FTL, an increase in Pilot complement will be required.
But I'm puzzled by
jayteeto's comment? A lot of NPAS calculations are based (I'm led to believe) on the expectation that an ASU is most financially efficient when flying around 1300-1500 hours per year. With breaks for servicing, (& no spare aircraft) that averages out around 5 hrs per 24 hrs, whether working 20 or 24, - so 3.6 hrs would be deemed a low-hour day. There are plenty of busy units operating at that rate, I think you'll find . . . and also a number of others sitting around waiting to "go over the top"!
