I agree with your opinion. This is why I love IPL way more than other leagues since we get to see our favorite players in action even after their retirement from international formats which previously wasn't the case.
I still remember watching Sachin, Sehwag etc play at the top of their game in the initial versions of the IPL. It somehow brings out the best versions of Cricketers in different aspects. People will pay even more attention now to the 1st game between CSK and MI.
This may be true to a certain extent. But from what I have seen, once the player retires from international cricket, his popularity takes a beating. Remember what happened to players such as Sachin Tendulkar and Rahul Dravid. IPL is a two month phenomenon and the hype won't last for the entire year. Also the fan support that these players get while playing for India is much greater than what they get while playing for the city-based teams.
May not be the case with legends because they have already done and made the country proud with their skills and whatever after their retirement from International cricket we will be witnessing will be bonus and surely as the age increases it is not going be same thing what was 10 years before. So expecting Dhoni hitting helicopter sixes like before is our assumption but reality is that it will not happen but witnessing them on field itself should be more than happy moments for the fans.
Good players do have a special place in the history. Somethings that done can't be undone. We can't compare the hard hitters at this time with the legend of old times.
It also depends on whom you asked. Every viewer has their age of crazy fan following and the one that shines at the peak of their fan following would always remain on their mind.
Personally, the tournament I watched with proper knowledge of cricket was since the 2003 world cup. Tendulkar, Ganguly, Pointing, Gilchrist and other contemporary players feels beloved to me than any new players.
Either with my change in personal preference or the change in cricket format, I'm less and less impressed by individual players. Dhoni seems to be the last indian player I loved to see playing.