Please allow for Rail structure (horizontal rails) to have a start and end. This can tie into the Baluster Posts (Start, Corner, and End) settings. Maybe this is available per rail?
If I have a Post offset, (seen in pic) the Space of 4" is not respected by the rails Start/End.
Ultimately the entire railing system needs to be redeveloped. Please add this idea to future releases.
Thank you for your consideration.