Business class has long played second fiddle to opulence of first class. However, with more airlines looking to do away with first altogether, the once-clear lines between the two cabins are now increasingly blurred. When you think about it, it’s not at all surprising, given the latest pointy-end pews have moved beyond mere seats to fully-fledged suites with sliding doors and more space, alongside bigger video screens and even personal closets. Here’s a glimpse at what nine leading airlines have in store for high flyers in the near future. Japan Airlines A350 business class Travellers jetting between Tokyo and New…