The Di2 battery field doesn't scale properly for large screen sizes. For example when using a 8-data-field layout, the Di2 battery percentage indicator is noticeable smaller than the device battery data field. this is of course a minor bug, but also a minor fix.
Mmm looks fine on mine with 7 data fields. 
No really. For example, in your photo, the font size for the cadence is bigger and bolder than the font for the Di2 battery data field. I'm attaching a photo as well with both data fields side by side. As I said, it's a minor thing, but it annoys me.
