It is very complex. Some trains have stops plus aggressive time table. Others have relatively less aggressive time table and less stops. Among these, some have higher MPS. They have completely mixed the concept of MPS, type of trains(Duronto, SF, Rajdhani etc), stops, and control the section as per their will. Aise mein, what you get is a khichdi.
A new time table has to be rolled out considering stops of trains and priority status. Stops of many trains at many stations has to be revised. Plus, buffer slots for late running trains as trains kabhi time pe nahi chala payenge ye log. Hence, you see it is not just management but a complete revamp that is required in NCR.