If you check the SQL query that is created by this fetch function you can see that this is not possible. The result you want to have is only possible if you fetch the children of each child recursively with a separate query which is not possible with an eZ template function/operator (unless you write your own, which is fairly easy to do).
The only difference between tree and list is that list fetches only direct children of a node, otherwise they are the same.
To be honest, I don't quite grasp the difference (or any useful difference to be precise) between list and tree content fetches. Both use the depth parameter, which makes them even more alike. And the name 'tree' is definitely misleading since there's little that we can do with the result as a tree. Can anyone give a useful example of tree fetch implementation? Thanks!
