One of the biggest blunders, which doesn't get much talked about, of Kohli/Shastri was to drop Shami for Bhuvi in world cup semis. I had mentioned multiple times in this forum that Shami as ODI bowler is miles ahead of Bhuvi yet in 2019 the hype was just so much around Bhuvi that a few matches Shami played in WC was because Bhuvi was injured. Shami is a champion bowler.