The main priority must be pushing forward with incremental improvements. Presumably DASH2 with the increased capacity on the loop line and the GCD turnback might help shift some trains to terminating south of Connolly? Closing the Maynooth line LCs might help get them moving westward with following trains being able to be dispatched sooner.
Regardless of how beneficial major projects might be (including the one I myself proposed only a few posts above) realistically IE needs to finish projects under way and thereafter capital allocations are likely to preclude major works like new stations and spurs. Someone needs to look hard at Connolly and figure out how some additional capacity can be squeezed from platform and track space - even in terms of how passengers are entering and egressing from platforms. Perhaps RUI have some ideas in that direction?
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