Don't know why I am writing this. Probably for people 1st time giving mains and I am not writing mains this year. So have lot of time to give inputa to others.
So I got 122 marks in 2019 (GS4), probably average or bit above avg marks.
Some suggestions:
Limit your examples and quotes. More they are more hard to remember and even hard to use them.
You can't remember 100 examples and quotes, remember 20-30 and try some basic and some unique. Then see where can you use all these. So 20-30 can be utilised at 100 of places. See toppers copies and pick up from there.
More emphasis on Indian and regional leaders/ examples: some can be KabirDas, Premchand, Bassavana, Periyar, from NE (currently don't remember), Sufis, Sikh Gurus, Dohas, Shlokas etc.
Case studies are more rewarding. But sometimes they can be unexpected like 1/2 in last year's. So instead of overthinking in them, you can turn back to 1st segment and complete them.
Speed is most important thing, I messed 2-3 questions due to lack of time, where I could have written better.
Last thing GS1 and GS3 being in Morning of this winter will affect efficiency,
GS2 and GS4 being in afternoon can compensate for them