Originally posted by: Eloquent
The issue was thus
1. Dhritarashtra was the elder prince and hence should have been King and his eldest after him
2. However due to his blindness, Pandu was made King.
3. Pandavas were legally, if not biologically, the sons of Pandu. Their very name Pandavas seems to me to be Kunti's idea to deliberately ensure nobody questions them. Niyoga was legally binding.
4. Since Pandu was actual King (Dhritarashtra only stepped in once he died), Yudhisthira had claim to throne as well
5. If Duryodhana claimed that Pandavas were not biological sons of Pandu, then even Pandu and Dhritarashtra were not biological sons of Vichitraveerya (the line actually ended with him). Which means both Duryodhana abd Yudhishthira were equally not related to the royalty and had no right to the throne.
6. One way to resolve this issue was to see who was more worthy and that was definitely Yudhisthira (before vastraharan)
7. After dice hall incident, IMO, nobody was worthy.
The grand irony was that there was one person who had every right to the throne but had stuck by his vow to give it up, even when the vow was redundant.
And the people who had literally no right to it where fighting a bloody war for it.
The message passed by Krishna wrt Bhishma is that the earlier societal norms or if you would call it "dharma" wasn't up to the mark in dwapar yug and should be replaced by higher dharma (breaking a redundant vow for the greater good). Thats Dharmasansthapanarthaay.
In a metaphorical sense, Draupadi represented the bhoomi/Earth and Kaurav/Pandavas represented the corrupt Kshatriyas. Hence all the wrongs done to her in the Dyut Sabha: being dragged by her hair, her menstrual blood being spilt, the vastraharan etc were all representative of the evil being done to Earth.
This was avenged during Kurukshetra (the story of Barbareek in which he says he sees only Sudarshan chakra and Kali drinking blood).