Spline "issue"- when FP distrubutes on next spline it continues the sequence list, so that is why the order sometimes looks mixed up from what You expected.
While bushes always gets placed as expected because it has no empty places, Lamp post position is faked with assumption that it's distribution starts with empty segment.
Maybe it is clearer with example: If first spline ends with Red segment, then continued sequence is correct.
The more spline features we start to add to ForestPack the harder it will be to control, and users will want even more from it.
We have RailClone with advanced controls for these purposes.
I have not heard such a phrase "too simple for RailClone" before
Hope this explains why that got mixed up.