unfortunately not many with startup experience are coming back who can contribute to the nascent startup ecosystem here. not much reverse brain drain for the startup/hacker community unfortunately.
There are interesting exceptions. I have had the pleasure to visit eGovernments Foundation, http://www.egovernments.org/ , and Arghyam, http://arghyam.org/ the last week. Both are run by former Silicon Valley entrepreneurs and are doing some really fantastic work with limited resources.
I think it is fair to say that what is currently needed in India is not the same thing that is needed in California, which means that the work being done will not be the same. There are also different challenges, including problems finding the right kind of staff, power cuts and horrendous traffic.
