I am a fan of the Nexus line. They are inexpensive high powered stock Android devices. The key word in that sentence was inexpensive. The Google Play Edition (GPE)of phones are nice (especially for those of us who enjoy stock Android) but the price is extremely high. Which makes sense because it’s usually a manufacturer’s flagship device. But I don’t see the sales numbers for GPE devices being anywhere near the sales numbers of Nexus devices.
The way I can see Google pushing GPE devices and ending the Nexus line is if they subsidize the devices to bring the price closer to that of current prices of Nexus devices.