Regarding the RailSplineComponent, adding a new spline point with Alt is not always convenient due to potential spline point orientation issues.
For precise and explicit use cases, it is often more effective to work primarily with the Details Panel to set precise location values.
However, this workflow is frequently interrupted by the need to select the last spline point, right-click on it, and choose Duplicate Spline Point before setting up the location explicitly.
If an Unreal Engine developer happens to see this thread, please consider improving this workflow.
