How did it go? I did try to search for it, but i can’t find anything like this.
I would really be happy to see a feature like this, too. We’re having a few topics where a “default” post-headlines should make very good sense. Fx. “My last buy”, “Rate users” (Sold items) and so on, where the intensity and information could be improved very much, just by making an default-post, that could remind the users to up in the link, the price and so on 
Nothing smart - but just typing in a few things, so it’s made sense to the poster in the thread.
I’m very happy about the template-feature on “thread”-level, and we’re already using that option for multiple categories.