Damn, I can't disagree with any of that. You are 100% right, the Moto X 2014 was a missed opportunity. When my loki-able S4 broke recently I almost ran to the Moto X 2014 because the 2013 device was so close to perfection that I hoped they nailed it round two. I went to the AT&T store held it and liked it. I played around on Moto maker and made a configuration. Then right before I bought I read a few actual Moto X 2014 reviews and after like three I was convinced to get an M8 instead.
A little better battery, a little better camera, or just having a 64GB model on launch (like the 2013 X eventually got and the Nexus 6 had day one) and a Moto X 2014 would be my phone right now. In many ways the Moto X 2014 is the normal sized Nexus for 2014, right down to the traditional crappy battery life and camera.
Obviously the 2013 X has been surpassed in hardware, so its not the perfect device for sure. Heck I don't have one for that reason. Still, I have had two people who wanted a cheaper unlocked phone in real life ask me what I recommended, and I pushed both to that 2013 X with great results. It is kinda amazing, the 2013 X keeps a value on Swappa far beyond its hardware (aka above M7s and S4s). I think part of that was because looking back it was such an excellent phone for the time, the closest to that iPhone-level of quality experience we have had in Android. I was sad when Google sold Lenovo, because that 2013 X showed what happened when Google got input on every part of the hardware process (unlike the Nexus program where some other OEM builds it). If Google would pull a Microsoft or Apple and just sell phones they made directly those would be amazing devices.
Overall I think this thread shows that in 2014 there isn't a clear cut awesome device. Every device has flaws, and quite frankly every sequel device (S5, M8, X 2014, G3) has at least one regression from the previous model. It is kinda a crazy year for Android.