Hidden collection items

Would become

I guess one disadvantage is that you don't see the order of all items. Don't know how helpful that is.

I guess technically they are not 'hidden' but are not shown.

That mockup looks like it would change the DOM structure.

Do you iterate over data and conditionally set show = false via binding?

How many items have you got there?

I need to understand whyis this important to you, what's the problem you are solving, beyond of having a bunch of items that are in a hidden state in the navigator