Don't Galway have 7 car ICR trains also and so does cork (21:00 from Heuston)
It would be kind of interesting to see some more 8 car ICR trains but in 5+3 formation.
Possible for galway in the future maybe
If irish rail use the spare mkiv set on the one service to Tralee then they can create on new service or create additional capacity.
If Irish rail just used 6 mkiv trains to cork then the other one could operate one service to limerick freeing up another icr