It would be nice if these blocks replaced the crafting table recipes so you have to use the blocks from this mod in order to make food.

Hmmm, nice idea!

I would suggest to this being an optional setting if it would be implemented. (We don't want to force people)

I'd even go as far as making it an addon mod since it strives so far off from what's Cooking for Blockhead's main purpose is. But realistically I don't think I will be going for that, as I can't even keep up with my current mods at the moment. If someone else wants to make a mod like that, I can help out by making sure CFB exposes the necessary API endpoints though.