It would be nice if you could post a photo stacking this on top of the plus version so we can see the size difference. People getting this will do so due to the size.
Last really good redmi was 3s - budget smartphone with great endurance rating more than 100h. It was something what made that smartphone special among dozen others. Now - it's nothing special. The same as others.
This design of assembled meat-plastic pieces is less durable than whole plastic unibody. Xiaomi should have gone with whole plastic unibody like redmi y1, oppo f5 or vivo v7.
Redmi 5 plus captures more details in images with same sensor.