I'm still rocking my P6 and it's going well, but not perfect. I have had some issues with Bluetooth and a growing number of no signal issues (which are typically resolved by toggling on and off Airplane mode).
I try to get 3 years out of my phones, so I'm looking to replace my P6 this year. I will probably miss some of the things mentioned, but I've been extremely turned off by Pixel's upcoming phone finding feature where it sends a Bluetooth ping even when off. While this would definitely have been a feature my daughter could have used in her teenage years, its encroaching on major privacy concerns.