Why Essential over Pixel 2, Pixel 2 XL, OP5, or, really any current flagship?
On paper, it offers nothing over the OP5 except for a higher price tag. Is that smaller form factor really worth an extra $200? And speaking of size, it's only a smidgen more narrow than the OP5 and, based off of a side by side comparison from Phone Arena, the OP5 and EP have very similar usable screen real estate (if using capacitive keys on the OP5), despite the OP5 being the taller phone.
Really, the only advantage of the Essential, that you'd be paying an extra $200 for, is theoretically faster OS updates, but if that's the case, why not just get a Pixel 2 or Pixel 2 XL?
Ignoring the form factor at this point, what software benefit is there to getting the Essential Phone over either Pixel? The Essential is the barest bones stock Android, whereas the Pixel offers a little extra polish and will also have timely updates. And, not that I care, but Pixel will probably also have a better camera, too, based on what we're already hearing about the Essential.
The only benefit I see of the Essential over the Pixel family is if the Pixel XL's screen and body is too big or the Pixel's screen is too small. If you don't mind a bigger phone, assuming rumors represent the final product, the Pixel XL 2 seems like the way to go. If you don't mind a smaller phone, the same can be said about the smaller Pixel 2, with its now forgivable bezels (thanks to front firing speakers). If pricing is the same as last year, I think $649 and $769 are more appealing than $700 for the Essential.
So why choose Essential? For their camera mod? Unless you absolutely have to have a 360 camera attachment, this isn't a selling point. Also, leaving the consumers to use their imaginations to wonder what other attachments we might see in the future isn't a selling point either.
I just can't think of the justification for spending more on an Essential over the OP5, unless maybe faster updates is really worth an extra $200 to you, and, in that case, I can't think of any justification to get an Essential over either Pixel, unless one is just too big and the other is too small.
Even if that's the case, $700?