I'm convinced, by the way, that a good way to find something novel to study is to just take the opposite of stuff that is being talked about a lot, because the flipside of a topic can be illuminating.
Multilingualism is hot -- study monolingualism.
The global spread of English is hot -- study places that don't have English.
Communicative Language Teaching is hot (in China) -- study people who persistently use the Grammar-Translation method.
And so on.