Whats wrong with Sly doing a few scenes for a big payday???
Its not as though anyone in the US is going to watch this movie anyway.
Hindi movies might be cheesy, but their catered for a specific audience.
And if they want to throw money at Sly, then by all means Sly should go for it.
I bet Sly got paid a big sum for doing maybe few days work. And since most of this movie is apparently shot in Hollywood, I guess he didn't even have to travel that far either.
Its good business sense by Sly. Its not going to harm his reputation internationally. If anything, a small cameo is likely to increase his exposure again internationally even more, especially since his box office draw had sunk badly in the early 2000's. Since 2006 he has become more popular again, and gaining some more fans in India is a good move. More money, means more movies for Sly!
Thus, when The Expendables comes out, expect more international viewers to come out and watch that movie.
And anyway, Sly is past the point where he needs to please everyone.
He is doing what HE wants, and thats a good thing.
A big payday for a cameo is good business I say.