Is there any plan to support loading feature layers in Unity sdk similar to JS?
I am unable to display layers containing line segments in unity, but everything works fine on the web.
We do not support feature layers out of the box. We have a sample for using point feature layers https://developers.arcgis.com/unity/sample-code/FeatureLayer/ which you can use as a starting point. You can use unity's line renderer for line segments.