It's a great thing that happened to indian cricket. I believe instead of getting too much carried away with this and resting/dropping all three seniors, BCCI should take an ideal solution. I would like to see in every match one of three trios taking rest to allow the youngsters to get enough chances in 50-50.
These are my ideal replacements for each of them.
1. Rohit Sharma for Rahul Dravid. 2. Gambhir for Saurav Ganguly. 3. Uthappa/Karthik for Sachin.
Only player of this team that I believe needs to learn a lot is Sreesanth. He needs to control his tempo, he looks like Zaheer during his early years.