I don't think popular actors will agree to be a part of this epic.. maybe one or two as Lord Krishna or Draupadi.. if all popular actors as cast in the role of the principal characters they will all demand a good amount of fees and the budget for casting itself will cross 100 crores. 😆 Add to that the constant squabbles over screen time and importance. Better to go with an all new cast.
I feel the idea of adapting Mahabharata in two films itself isn't a good idea.. Mahabharata is really long and detailed.. each character, even the 'side characters' so as to say, have their own story.. and everything joins in the end to play an important role in the battle of Kurukshetra. In fact, the BEAUTY of Mahabharata is about how every little thing in the past joins in to affect the battle, and how every little thing during and around the battle affected the future.. everything fits in like a perfect jigzaw puzzle.. THAT is what underlines the true essence of what Lord Krishna says in the Bhagawad Geeta that I am the past, present and future, whatever is happening is bcos of me and my plan and bcos there is a reason behind everything.. IMO a cinermatic rendition in just two films wouldn't do justice AT ALL... they will miss out on so many things.