You may be able to accomplish this using User functions within a conditional filter on your dimensions in the view.
I just verified that the following does in fact work in V7:
username()="dhuff" AND sum(Sales)>700000
This calculation will only show Sub-Categories to user dhuff that have more than 700000 in sales. You would have to apply similar filters to your dimensions in your views.
If you want to do this at the group level, the ismemberof() function may also be useful.
Hope this helps,