"A major problem with the idea of making VR32 wearable, according to Makino, was that Nintendo engineers were concerned about placing a chip with high radio emissions near a user's head, since the safety of EMF radiation on the brain had yet to be thoroughly studied. Its proximity also produced visual noise in the displays. 'This meant that the internal CPU had to be covered by a metal plate,' says Makino, 'which made the whole system too heavy, forcing the goggle concept to be abandoned.' Not long after, Yokoi's console evolved from a strap-on headset into a heavier device that one could prop up onto one's face using a clumsy shoulder stand. Again, Nintendo's legal department feared liability issues; the device might cause children to fall down a stairwell while playing. ... Hobbled by liability concerns, VR32 soon evolved into a bulky red viewport mounted to a bi-pod that rested on a table."
The PVP system will be getting revamped, and they're introducing Class-specific halls and followers. The expansion will contain the requisite new raids and world bosses, of course. Small dungeons will be getting increased focus in Legion. As with the previous expansion, players will be given a free level boost for one character to the current level cap in order to get started on the new content right away. Blizzard has posted an cinematic teaser, and the full announcement trailer on YouTube. A beta test will start sometime later this year, but no release date has been announced. MMO-Champion has a post full of details known about the expansion.