For all you swimmers and hopefuls who like to build charts and do calculations, here are some updated numbers from a friend in Network:
Mainline growth A/C (not replacements) between 01Jan14 and 31Dec17
717 - 69
321 - 30
739 - 18 (tied to 757 retirement plan and subject to change)
333 - 10
Pilot requirement is 14 per NB and 20 for 330.
He does not work in Crew Resource but has heard they plan on attrition of appx 1000 pilots in the same time frame. FWIW.