Heaphone jack is a great bonus in my book, but then again I am described as a neckbeard by some of my non-imaginary friends.
Also glad to see a return to mid-range class phones. It's what the Google line (Nexus) had always been. One Plus has been pretty close too. I just don't think it's worth more than $500-600 for a phone. I honestly don't like paying more than $300, but there's nothing close to that of decent quality it seems.
Holding onto my current phone for at least another year. At least the battery tech seems to have finally matured.