'Would a generic pilot joining NetJets Jan 2008 have to wait longer for a Command opportunity than the same pilot had they joined Jan 2007 all things being considered (expension/retention/turnover/etc)?'
I don't think so, DB, a bunch of aircraft will be arriving next year, and considering that a few pilots might be leaving, the demand for captains will be as strong, if not more, as it was in 2007.