I don't want you to think I'm saying "no", I'm trying to suggest different options for you all.
One of the things we have found over the years is that creating subforums for every suggestion makes the site difficult to navigate overall. We try to streamline things as best we can. And honestly, lots of my recipes would "fit" into a healthy category, but I tend to post them in the category where I think they'd do best. For example, I would post a healthy muffin recipe with the muffins, or healthy salad dressing recipe in Salads and Dressings.
The tagging system would be our best bet for something like this as recipes get scattered all over the place. Since the tagging system has not been used effectively until recently we are playing catch up a bit.
I'll bring this to the attention of the team and we'll chat about it and see if we can come up with something to help.