There is a lot of references to "your" in the OP, but I suspect it is not the plural form. The problem my family has is our ever diverging personal photo collections. I've yet to find a solution.
My wife and I have a similar problem with our music libraries. I have all of our music in my library and on iTunes match. I'd like for her to be able to access music in iTunes match too, but there's no way to do that without sharing an iCloud account and thus sharing everything else iTunes related.