I already posted a comment on this thread before, but if I was asked a second time I’d say Cabra, or, as many others have said, Navan. If we were opening Navan on the GNRI branch, I’d also reinstate Duleek, and maybe extend the line into Kells. Finally, if there was infinite money for building new lines, I’d love to see Navan—Armagh to open as envisaged back in the 19th century to tie in with the All-Island Strategic Rail Review, it’d certainly be a useful diversionary route!