Free tagging with parent selecting

Hi,

I saw that free tagging is enabled with this module, great! But I miss the freetagging possibility AND parent selecting.
Now I can type in a new category, but it is not placed in the right hierarchy order.

I saw this is implemented on cck_taxonomy_ssu (http://drupal.org/project/cck_taxonomy_ssu), but because I already have content and terms attached that module is not usable for me. I attach a picture of freetaggging integration in that module. May be you can use it to your advantage?
Is it possible to integrate that functionality to this module please?

Thanks in advance for your reply!

greetings,
Martijn