There's no way any Medieval realm would try to conquer a place as distant as India, no matter how rich and prosperous it supposedly was. It would simply be logistically impossible to move troops en mass from Western Europe, through Muslim-controlled Syria, Mesopotamia, and Persia, to India. The Goths and Germans conquered Rome because it was right there; the British conquest of India was a relatively slow process that was only achievable because the British had the naval power to move resources from Britain, or one of their many other colonies, to India; but, to a Medieval Catholic, India isn't right there, it's some far-off country east of the Muslim lands that they should be putting their attentions towards, and they sure don't have the naval capabilities to move troops their en mass all the over there. So a Crusade for Orissa, Mongolia, or any other far-off realm is definitely unrealistic, although I do agree that Crusades shouldn't be limited to just Jerusalem and Andalusia, just to places that Catholics could realistically conquer.