can't see cityjet going for it, a key pull on their snn route is exclusivity, they can serve both the transit and leisure market. flying from cork to either schipol or cdg you'd have competition for the leisure part at least, so it's a much less complelling argument.
not much chance of Aer Lingus basing anything else there either. they'd need to divert capacity away from either dublin (too scared of yielding peak time slots to fr) or belfast (too scared of looking 'uncomitted' to the Northern dream), so either way would seem to be a non runner.
might get another FR plane based there once they sort out debt, unlikely t happen before it.