Exactly my reaction. While I'm very impressed by the tool, my main impression was that the language should have constructs allowing one to as expressive as possible, at the appropriate level of abstraction.

I'd use this less to deal with a language's lack of expressiveness and more to deal with abstruse APIs. It would be very useful for httplib2 or SQLAlchemy, even though both are written in a pretty expressive language.

I'd especially be interested in creating snippets for my own proprietary APIs, which are typically move more quickly and are generally less documented that big, established public APIs.