Have to agree with ryan2000, you can build a terminal in Cork to handle as many pax as you want, but its irrelevant if the airside infrastucture doesnt support this.
Cork needs more stands.
What would the chances of extending taxiway Charlie through 17/35 for some remote parking to the west. Or bravo through 07/25, there seems to be alot of space there.
With regards to the parallel taxiway, the plan in the old terminal had it on the east side. As stated before there are some issues with the club that make this difficult. Why not have on the west side of the runway. Planes on the main apron could use alpha, charlie, 07/25 to access it.