Although the selection seems to be to groom the newer lot however a senior like Ganguly would have been a good option. More so since Sachin had also opted out.
Having seen Ganguly during the IPL, I feel this is one senior cricketer who is still capable of competing even in a very demanding sport such as T20. Certainly has some cricket left, and should not be ignored atleast in other one day series; I mean with more superior opposition.
I would say that both Tendulkar and Ganguly should be rotated in one day matches, for a common position, as both are openors and medium pacers. This would also check unnecessary injuries to the ageing duo!