Default atributes per category & other stuffs

Well, many people may suggest many things to you.
We may help developping this as it’s really lmissing feature in Woocommerce.

One of the best plugin i saw dealing with that subject is JC WooCommerce Advanced Attributes: https://codecanyon.net/item/jc-woocommerce-advanced-product-attributes/10201812

Create Attribute Groups

Create attribute groups for different product types to save you time when adding attributes to products.

Load Attribute Group onto products

Edit a product as usual, under the product attributes select the attribute group you wish to load into the product, which loads all attributes and their settings.

ANOTHER EFICIENT FUNCTION WOULD BE :
1/ To pre-fill deafult attribute with Attributes terms as JC do. Usefull for variations.
2/ Define diferente set per category as it happens in real life.

Hope this will help.