A large percentage of Endeavor pilots were part of a flow. It didn't work out for most people (why it wasn't honored I have no idea). In today's environment I don't see any reason to place any importance on a carrier with a flow. Why would you want to wait 8 years to flow to American? Any flow to Delta would probably be on a similar timeline, to me it seems like hanging your hat on a flow is giving up years of seniority. A great deal for American if they can get pilots to fly for their sub-par regional carriers for an extra 4 years only to reset their wages back to year 1 after 8 years.