I think a separate cooking thread would be a good idea, anyone looking for recipes/ideas would more easily find them if they aren't interspersed with photos and discussions about rabbit care. The "any home bakers" thread also has an index to the submitted recipes, so that could be done (if anybody wants to do it) on a separate thread.
A few discussions won't turn the whole thread into a concentration. "Rabbits" thread should be for all topics involving rabbits. If someone wants to strictly talk about meat or just rabbits as pets they should make their own page.