Regular options can register a listener that triggers on value change. It would be great to have this option also for ListOptions, both to see when the list itself changes, and when the inner controller changes a value in the list. Personally, I mostly need the second.

Ah, I figured out that I can manually add a listener to the ListOption object after it was constructed. So the actual feature request would be to expose this in the Builder already.

Yeah seems like I missed this on the builder.