ability to expand and collapse slate materials with one click

[Anonymous]

 I would like the ability to expand and or collapse selected groups of materials in the slate editor. I do realize you can individually accomplish this with the + and - sign however it would be nice to do one + selection ( say the front one) and expand and collapse the rest of the selected materials with one click.

In addition when this happens they would be nicely spaced and not overlaying other materials or each other.

Here is an example of what i mean by expanded and collapsed and spaced.

[sam_large]

If you tap H on your keyboard that hides all the unused slots which would achieve a similar result, there's probably a hotkey for what you want too?