FR will always try to get the best deal but they won't dump PIK as it is (and will continue to be) one of their best negotiated contracts. They also have a maintenance base at PIK.
EDI has always been on their radar as the city is a big inbound attraction for foreign visitors. What may happen is that an EDI base will further slow PIK's FR growth but unless GLA come in with a deal close to or on a par with PIK's, then FR will remain at PIK for the foreseeable future.