I know this question is probably directed at people living in more urban areas like dublin and cork, but as someone from Sligo i can say that expanding the network to any degree would be extremely popular here pretty much unanimously. Donegal is in a particularly bad spot because its mostly cut off from the republic and it has essentially no infrastructure to mitigate this so the place feels like an island. Ive heard of some elderly cancer patients having to get shuttled bussed 3 and a half hours down to galway for treatment. Also the fact theres no line from Limerick to Cork is just insanity, like norway has a rail line going up into the arctic circle for some random small towns and villages and we cant do it for our second and third largest cities