Let's say that I'm trying to determine how many levels deep I should make my filtering tool in my search screen for a set of data. I've got meta for my data set that goes 10-15 layers deep. I just don't think my users will want to go that deep. I want to provide filtering, but for the sake of simplicity I also want to make sure I'm meeting users expectations without creating a situation where they feel like they are "drinking from the firehose" so to speak.
Is there a card sorting exercise that can be quickly conducted with 8-10 of my users that will help me identify the depth to which I should allow filtering?