Later in 2011 Rajinikanth acted and it turned out to be blockbuster of the year. But even after that Shankar was keen on making a sequel adds sources but since it requires more strain Rajini wouldn’t be preferrred for health reasons.
But with Kamal it can be possbile, also there are possiblities of Rajinikanth to act in Indian sequel. Since Indian story was made keeping the Superstar in mind adds sources.
Seems like director Shankar is going for sequels on the lines of Hollywood films.