Again, talking about 'potential' is meaningless so long as progress is not made on removing barriers to Pakistani exports to India.
Perhaps your view of 'potential' is more optimistic since in the current scenario Indian exports to Pakistan would boom while Pakistani exports to India would continue to lag behind, partially as a result of those aforementioned barriers.
You cannot just focus on 'potential' while ignoring issues that make trade unfair for one side or the other.
Channels must be opened to let free trade flow from both sides.Though it depends upon the trading bodies to decide what commodity to import/export.We have massive textile Industries in India which need cheap raw materials.Cotton from Pakistan may just suit the needs.
List of textile based industries in India