Collection membership column in Middle Pane

IanHerriott

Advance apologies if I've overlooked a previous discussion of this:

Is there any reason not to have the option of adding a column to the middle pane that would show which collections items have membership in? I add items and forget to add them to a collection, or add them accidentally to collections they don't belong in. It would be nice to have a way of identifying the orphans and misfits.

I know that for Mac you can press Option and the collections in which the selected item will show up highlighted... but it would be nice to have the info for all items at once.

Thanks.