WTR
One exercise which i always make young FOs do without which i cannot clear anyone is pilot incapacitation. Most clear this test without any shade of doubt. Some need retraining both expats and Indians. Where the Indians score is following the staccato (rapid fire) English used in Mumbai and Delhi ATC.
I have trained pilots from South America to Australia and they all have basic skills but they generally wait to be told... but the locals get together and prepare on their own and ask. Here it is a communication issue.
No comments on DGCA.... except that they want to be JAR compliant soon.
JB