One issue i have noticed on other planets is that the gold recipe seems to take priority over copper ones. I am using DocJades automall (https://factorioprints.com/view/-O9VOykV4CirECeCrQdq) and it sets new requests for items to be crafted to make more complex ones.

An example is when trying to craft Big Crushers. It then requests Electric Crushers, which then requests Burner Crushers... the gold one. It then gets stuck and can never make the crushers, as it will wait forever for gold plates. Luckily, the mall is intelligent and will skip a recipe if it doesnt get ingredients, but it is still an issue.

Im not really sure how this would be solved, but it seems that the gold recipes are treated as the "default" by the game for setting and requesting recipes.

I can set this on the entity recipes, maybe it helps: https://lua-api.factorio.com/latest/prototypes/RecipePrototype.html#allow_as_intermediate

But I probably can't set it on the basic circuit boards as it would prevent players handcraft burner entities directly.

Ah, so currently it allows either to be handcrafted as an intermediate, but for some reason it prioritises the gold when auto selecting the recipe using fancy circuits. I dont know enough about either the circuitry or modding for how this could be caused or solved.

Its not the end of the world, as I imagine the number of people using automatic circuit based malls cant be high, and it doesnt take much effort to throw together a requester and assemlbler to provide the system with the correct one. Its just a strange interaction I thought was worth bringing up.

I wouldn't even know how the priority is determined. I'm closing the thread.