Early out doesn't close now for another 13 days or something like that, but are you suggesting that senior captains would get displaced to JFK and quit instead? While it is not impossible, I think it's a long shot.
Just like you think there would be a shift in flying to get the senior captains to JFK to make up the freedom stuff, there will be a shift in freedom's flying down to CVG, so there won't actually be open flying in JFK.