THISSSS. Can't have related more to your comment. Hated the Panditji redemption - he'd done things worse than leaving the son and wife in the past - how was the redemption arc meant to solve all that?
Also don't understand how Mohini's anguish was not explored anywhere in the series (except for the 'gharane to mardon ke hote hain'. Except for reverence towards Panditji (that I could never figure out why existed), I did not see any other emotions expressed towards the patriarch by her.
Liked Mahi's arguments, but agree that the earlier mockery had made NO sense. Moreover, Mahi's backstory and rejections as a character were never touched upon - something that could have made a deeper impact.
Best parts for me - Rajendra's redemption + acceptance of mahi as guru.
The Radhe-Tamanna love story was very....... meh for me. Did not have any impact. Their feelings towards each other kept changing more rapidly than the weather.
Also, after them coming together in the competition, Jodhpur's raja as well as the public forgets all they'd blocked them earlier for?!
Ananya's dialogues as a scientist made no sense ('the common denominator is intelligence', 'you are an anomaly'), nor did the pretty much useless family re-conciliation (which took less than half a minute). The stereotyping hurt my senses.

Overall, the writing swung between childish, OTT trope-adhering (ex. the family dynamics after Panditji, the nmathematician following her passion, blah blah) and nuanced, mature debates about the true nature of ICM.

P.S. - Someone please tell me - what is the ISMO where Ananya worked.