Suggestion Box

I know that the level of 3 within a group can allow members to see all group items. I would like to make a suggestion to be able to not only restrict an item to a certain group, but to be viewable by only a chosen level in the group. I think this would be especially handy for group leaders who all work on various items that are just meant for them. They could set the restriction level to the level of the leaders and then only they would be able to see it. This would make it a lot easier than having to create passkeys for everything and pass it out to a bunch of people if they're all working on it.