I really like the new railing/fence tool. It is a dramatic improvement over the previous tool.
With that said, one thing that could use fixing is the handling of corner posts. If you are using a square post, the tool automatically rotates the corner posts to mediate the angle of the corner, rather than realistically squaring up with either the entering line or the exiting line. This is not a realistic application. For example a fence/railing with square posts that jogs frequently at