Heroes?? Some people in a certain part of Ireland might regard them more as traitors
Some of the Irish station names work well enough, but they often replaced (IMHO) better names like Kingsbridge and Westland Row. I've never been sure about the practice of enshrining nationalism in infrastructure, as it might look petty to outsiders or future generations, and it doesn't seem to have caught on outside Dublin (where a distinction between multiple stations is needed). When I first started going to Dublin in the early '90s people even as young as middle age still said Amiens Street, Kingsbridge and Westland Row. The use of 'Pearse Street' for Pearse station (Westland Row) is a very common mistake due to the road of the same name being nearby, so people saying 'Pearse Street' obviously don't realise what the station is really called or the reason why.
Who knows or even cares that the [only] station in Tralee is called Casement?