He is known for his social service activities apart from founding one of the great IT companies. So, he has the right mix of skills, intelligence and compassion. However, my serious doubt is whether he would be given a free hand by the politicians. He may not care to be a rubber stamp. Kalam, despite his greatness, has only had a subdued tenure and could not force any issue.
I doubt if NRN would be comfortable in such a scenario. Remember, how he threw the Bangalore Airport chairmanship at Deve Gowda's face when the latter questioned his contribution??
I feel the politicians will also be uncomfortable with him as Prez...