If Jhumpa Lahiri keeps writing short stories of the calibre in Unaccustomed Earth, I couldn't care less if they all explore the immigrant experience. Nobody seems bothered when David Adams Richards sticks close to the Mirimachi region in his novels. Maybe it's because the both write near perfect sentences.
Conversely, Douglas Coupland writes the same book every couple years, too.
The lack of even a single coherent sentence hasn't hurt him either.
Posted by Dave