I would like to use this module not as tree, but one list, and for my use case it is already working out good. Use case is list of interconnected nodes for printing. I have this tree of nodes and user would like to print top parent node + all nodes that it links to.

Trick is that sometimes child node may link to parent node that has been processed already by views tree. Maybe is this option is enabled, we could keep views_tree_processed array in $variables and tell theme_views_tree to ignore result that is already processed?

Ideas?