Additionally all ministerial posts in the PM's office should be eliminated as well as there is no need for them.
Only the ignorant members of the reCHEEme do not understand that PMO Ministers save money by not having a full ministry E.g. Lim Boon Heng should have been Minister for the Aged, Lim Swee Say, Minster for Labour Relations.
Of course you can go further and be like Malaysia - even Law Minister also is parked in PMO.