Normal brake wear?

[Deb Mac]

First time working with electric brakes so not sure what is and is not normal wear.
I’m have a set of complete assemblies coming - shoes were cracked though barely worn.
I know you want flat surfaces on magnets and drums (armature surface?) but what is considered acceptable/normal wear, before you want to replace or reface?

That “scoring” is so light that it doesn’t even catch a fingernail. It’s a little rough but not what I would call scored. Attaching pics of the magnets and drums, looking for opinions. Backplate assemblies are already en route, but having a little trouble tracking down drums separately after the fact if I need them.

I am in Canada so options are more limited for sourcing.