The removal of the MMRT may have made the iron ore glut possible, however I don't see a rein station of the tax as a solution.
The solution could be in my opinion to grow demand faster than current production.
Rather than an Australia/India Free Trade Agreement, Australia would be better served if China produced steel for construction and infrastructure purposes in India, Indian Pm Modi keeps on saying his nations steel producers will have too increase production output before his nations needs can be meet, but that not need be the case if a 'proper' trade arrangement existed between India/China.
Perhaps Andrew Robb/Barnett and co could suggest a three way trading arrangement involving Australia, China and India (Trade Block) where Australia supplies the raw iron ore ingredient to Chinese Steel Mills who intern supply a finished steel product to India.
The alternative is to wait decades for Indian producers to grow sufficiently enough to require vast sums of Australian iron ore!