Government decision queried

ON June 10, The National published a story on page 4 on the amendment to the Prime Minister and National Executive Council (PM & NEC) Act which repealed the provision that created the office of chief secretary to government.
In reading through section 19 of the PM & NEC Act 2002, I noted that sub-section 4 states that the chief secretary to government is the senior officer of the national public service. Although it does not explicitly state, it implies that as a senior office of the public service, he is deemed to be the head of the service.
The issue I have here is that section 188 of the constitution creates all the state services with each having a head.
These are: police force – police commissioner; defence force – commander; parliamentary service – the clerk of parliament; national public service – chief secretary (now abolished); correctional services – CS commissioner.
I have three questions for the government lawyers.
With the abolition of this office, how does the government intend to coordinate the work of all line departments under the public service?
Is the decision to repeal this office consistent with the intent of the constitution to have a head for each state service?
And if the answer to the two questions is no, then is the decision to abolish the office of the chief secretary, in his implied capacity as the head of the national public service constitutional?

Commander xxxx,
Murray Barracks