How can I create a composite Device Accessory?

When I create a group accessory that is composed of two or more previously created accessories, I can not use the sub-accessories features that already defined. I have to create:

- New axes systems for the new Group accessory although this is already defined in the sub-accessories.

- I have to create new Mechanical prots although it is also created before in the sub-accessories.

I want these features to be inherited to the Group accessory.

If you want to see how big of an effort is that, please see the second attached picture.

This is very useful for customers who use large number of accessories groups together.

The customer do not want to recreate the accessory group from ground up one by one everytime he creates a new ppr context.

Most of these accessories are used on multiple machiens so I can not put them in a manufacturing cell as I must insert a machine in it too.