I just enabled HDR for the first time today and was surprised at how different things looked.
In a good way or a bad way?
Both. Like I think grass and trees tend to look better in HDR, also any makeup the hero is wearing. But the snow and some of the brighter effects look way worse. Ultimately I left it turned on as I felt the good outweighed the bad. But someone who'd prefer more muted, natural colors over vibrant painting like colors would probably not be happy.
Here's a pic from my house where Sony turned HDR off for the pic.
And here's the same area in the home with HDR on that I took with my phone.
Unfortunately I didn't realize at the time I made this thread in the housing forum that the hdr would be off with the videoing so they aren't similar posed. I didn't realize until later and that's why I I included a pic snapped with my phone. You can see the color difference though.