Hey! Thanks for the explanation. The guys at Erindale’s Discord and me found out you can simplify your tree a lot. You don’t actually need any capture attributes.
Your solution with the Edge Vertices is very interesting, I’ll have to look into that deeper. It’s definitely an advantage not needing the origin within the bounds of the object.
In any case I have to thank you a lot for figuring this out! Allowed me to have a beautiful stacking node group with gap and alignment controls.