Hey ,
Gotcha, thanks for looking into that one.
I have an idea for a solution that could work. How about a Transform Type-In Panel (free floating) that maybe like one of the F Keys could bring up?
It would work for anything that has a World Position and that way, you could avoid the need on it being a priority and simple just re-set the transform in the actor so that it would show in the Details Panel instead.
This could also be handy since I always need to scroll to it on the panel and could be much easier if I could hit a key and a small compact Slate Window could pop up and work with any Actor you have selected in the editor just simply Alt-Tabbing through each field for quick entry. That would also work will the Spline Points as well since this Slate Window could make a call to update it’s world position 
Main Issue:
Were the developers able to figure out though the main issue of this thread in why calling the BP Node, ‘Set World Location at Spline Point’ is not updating the location of the Spline Points?
Thanks again!