I suppose the Bertie years were the Apogee of Clientelism.
It was easier to give every backbencher the promise of a dencralised office in his sithole county town.
Your point about commuting for the promotion and a 2 year hardship is valid But that's becuae they had assed it. You have to burn the boats. It's all the senior positions that should have been moved so they would drag the juniors with them. Not have it so that it's a light house to return to.
Centralisation of Government, legislature, Judiciary, Economic and Regulatory centres to Dublin is bad for the whole country including Dublin.