We should assume that in such arbitrary team all players play at their prime best/best form! Otherwise things can get screwed up just like how it happens with current/ongoing teams! (For e.g., Dhoni today is not even 30% of what he was at his best!)
Sachin
Sehwag
Ganguly
Kohli
Yuvaraj
Dhoni
Kapil
R.Jadeja
Srinath
Zaheer
Kumble
Sachin & Sehwag should be the best opening pair, even though you will be tempted at including Ganguly, but Sehwag's best utility is as an opener! Even though he may get out at times, but on his day he can take the game away from the opposition completely. This is more true in test matches, he actually under-performed in ODIs. If Sehwag fails there is Sachin to provide the solidity and also Ganguly. Actually I want more fitter Ganguly who can bowl some overs. Yuvaraj scores over Dravid as a matchwinner in ODIs. Dravid would have found place in ODI only if Dhoni was non-existent (I mean as an WK/Batsman, because barring Dhoni there is no one actually who was even marginally good with bat! We would have taken Dravid's bits & piece WK skills as better prospect) Kumble will definitely play for India in both formats (except T20) I think people have not seen his best at his early days... He is at least better than Harbhajan & Ashwin whose prime didn't last long! That's why I tell that such arbitrary teams is all about picking the players looking at their overall impact and not necessarily on their form at certain period and whether they outplayed someone at some point (at one point when both played together definitely Harbhajan outplayed Kumble, and Ashwin outplayed Harbhajan, but actually Kumble was miles ahead at his prime when neither Harbhajan nor Ashwin played along with him!) I will also have R.Jadeja as 2nd spinner, will utilize his whatever batting skills (in fact he has decent record in ODI with bat) and definitely he is all-time best fielder for India! We also have Yuvaraj & Sehwag's part-time spin... Raina will be reserve/12th man... Also Gambhir, Prasad & others will join the reserves...
Having said that the 1983 Indian WC team can upset this all time team. Same goes with 1985 world series team which was even better... Sometimes the team combination works well instead of putting all the big names together... That is also one of the reason how Pakistan beat India in CT finals...