I think the 744 divisor has been very high for quite some time. OJM is due to go in a few months but it's been 'slow flying' so not sure that will have much of an impact on crew hours. The only route the 744 loses to the 787 in the next 12 months is three times a week MEL- LAX. So it'll be late 2018 before any excess 744 crew starts to become an issue. With a few Captains approaching 65 on the 744 they may not need to RIN in that rank.
So 18 months or more before a RIN may come into play? Perhaps they'll consider it as part of the 18/19 training year allocation and do a bunch of 'redeployment' slots on other types.