There was talk of a second plane for Cork, but it would mostly operate to Stansted taking over from the Stansted based plane that currently operates the route.
It could operate the current service to Stansted and still have time for another UK rotation in the day. The most obvious destination would be Prestwick. The passengers would mostly come from BA's Glasgow service and RE's Edinburgh service with some new traffic developed. Basically, it would have minimal impact on their existing Shannon operations. East Midlands or Bristol could be possibles as well.