My speculation (and only speculation) is that BOS will go the way of BWI and EWR. , Reduction of mainline, conversion to regionals, and try to route everyone through CLT, no matter the end destination.
I would not be surprised to see routes ORD-BOS go regional, and reduction in daily non-stops. Just route everyone through CLT and the nine daily non-stops. ORD-BOS has 11 daily non-stops, CLT-BOS has nine. Come back and look at this post in 18 months and I speculate you will see a decrease in ORD-BOS non stops and a increase in CLT-BOS nonstops...
A someone who flies the MDT-BOS nonstop, I enjoy the awesome convenience, but I am also realistic on how AA has been revising it North East cities to the "great hub at CLT" as the plan. I expect in the not so distant future to be flying MDT-BOS via CLT......