One Void Better than Array

'Array'is one of the most useful features when we make families. But it has some weaknesses. There are two representative I can list.

1. Makes families heavy and system slow.

2. Arrayed components can't be joined each other after loaded into projects.

Once I've made a 'Joinable Stair Family' couple of years ago.(I think most people would understand why I made it)

You can download the family here

This looks work fine, but it's little bit heavy and can't have joined steps when they are increased in a project. (so I had to make steps array enough numbers in family editor.)

Here is another version I recently made.

Visibility of Void

Here is a question.
Is it possible to control visibility of Void in a family?