Hesson had a great stint with New Zealand, helping them reach the final of the 2015 ICC World Cup.
Meanwhile, Simmons had enjoyed a great run with the Windies, as he helped them win the 2016 ICC World T20.
Shastri likely to retain the role following Kohli's backing
As of now, it seems Shastri is likely to retain the role, especially following the backing he has received from current Indian skipper Virat Kohli.
"With Ravi bhai, all of us have a great camaraderie, everyone in the team shares mutual respect [with him]. And we have done really well together as a group," Kohli had said.
Assistant coaches too could face competition
As far as the assistant coaches go, batting coach, Sanjay Bangar, could face competition from the likes of Pravin Amre, Vikram Rathour and J Arun Kumar, who are enjoying stints in the domestic and IPL circuit.
For fielding, R Sridhar would face a stern competition from South African legend Jonty Rhodes.
However, bowling coach Bharat Arun is likely to retain his role, alongside Shastri.
No need to fiddle with Shastri and Arun
While Shastri and Arun are the strong candidates to retain their spot, the author too agrees that there is no need to try out new names.
However, the batting of Team India can improve and a replacement in the form of Amre could work.
As far as the fielding goes, Rhodes is certainly a no-brainer here.