Ray-
When can we hope that the new feature will be implemented on Wiktionary? Structure is a lot more important there than on Wikipedia.
There are still a couple of bugs to fix and some adjustments to be made before the remaining wikis are upgraded. For Wiktionary, it would be interesting to have a minimum article length before the TOC is triggered, since Wiktionary entries often have a lot of headings while being relatively short (making the TOC mostly pointless).
Regards,
Erik