I definitely think your second summary is the most tantalizing. May I suggest that you shorten it a tiny bit so that it's more like a teaser than a summary, per se. So that it's more like: Professor Severus Snape believes that Muggle culture has nothing to offer the wizarding world. Professor Hermione Granger sets out to prove him wrong. I mean, who wouldn't want to read that?

Adding The Lord of the Rings might be a beautiful bonus!

And let me just say again, for the record, how much I liked your piece!