Apple has painted the iPod family into a corner. Having put its best resources into developing ever-improving iPhones and iPads, the company now routinely saves its most exciting new features for its phones and tablets, trickling them down to iPods only when they’ll fit in smaller, thinner enclosures. While this has been more or less the case since the first iPhone debuted in 2007, hitting the iPod classic particularly hard, there were glimmers…