With the increase in price and out-of-the-gate contract subsidies, the Nexus line has now transitioned from a developer-targeted effort to a full-fledged mass-consumer brand.
Having said that, this transition demands that they compete with the iPhones and Samsungs. Taking that into account they should've released an additional 4.5" phone, along with the 6". This could steal away the people who hesitated in getting the 4.7" iPhone 6 due to the size, and if someone is into getting a humongous 5.5 inch iPhone 6 Plus, they'd be even more into getting a 6" device with not much larger physical dimensions. The goal should be find the perfect two offers to cover the whole spectrum of buyers.
Having said that, this transition demands that they compete with the iPhones and Samsungs. Taking that into account they should've released an additional 4.5" phone, along with the 6". This could steal away the people who hesitated in getting the 4.7" iPhone 6 due to the size, and if someone is into getting a humongous 5.5 inch iPhone 6 Plus, they'd be even more into getting a 6" device with not much larger physical dimensions. The goal should be find the perfect two offers to cover the whole spectrum of buyers.