Knowledge is power.
“Khamosh rahoon toh mushkil hain, keh doon toh shikayat hoti hain" (It is difficult to remain silent; But if I speak, they complain.) --------- Saba Afghani
There will be many considerations to finalise a name for the minister post. His background, experience and management capabilities may be seen and they may be given chances. As mentioned by the other authors, probably some of the earlier ministers might not have got a better score in the evaluation process. Some might have lost their elections. So many new members might have been given a chance. Newcomers can also perform well. When NT Rama Rao became the CM of combined AP, all MLAs except a few were new to politics and some of them became ministers also. Later on, they became very seasoned politicians and became seniors in the party.
'Idhuvum Kadandhu Pogum "
Even this challenging situation would ease