Retrieve Field Node

I really like the idea of fields and what they mean for geometry nodes, but I think they lack something that could be very useful. Currently, in my understanding, there is no way to retrieve field information from geometry that is generated within a geometry node tree.

I propose that there should be a new node or set of nodes (highlighted in orange in my mock-up) that allows you to input geometry data, in this case generated by a point distribute node, and then outputs a field from the geometry, in this case position. For my example, it would allow for the height of the cubes placed on the sphere to be randomized. I think this could allow for a lot of new possibilities, including expanding what is possible for procedural generation using geometry nodes.

I hope my explanation is adequate, I would love to hear what others think!