Partner sharing, Face tagging, adding photos to albums based on faces.. these things are great. I even enabled the auto add thing on my brother in law's phone because he was notorious for forgetting to share photos of my kids (they spend a lot of time together). So now any time he takes their photos, google photos adds them to my shared album and I have 'Auto save' enabled on my side so those photos get copied into my account automatically.

Also recently Google photos has really done a good job of adding editing features. Ah I really hope Google keeps it going.