Photos will automatically categorize pictures by person, place, thing, etc... I never bother making folders or albums because I can just search by date or place or "black cat" or whatever. If the system can't figure it out on its own you can easily multi-select a bunch of pictures and add keywords, which can then be searched. If you really don't want to see the whole unfiltered camera roll ever you can just stay away from the library entry. If you are in "My Albums", for instance, and quit the app, when you come back you'll still be there.

I guess I don't really understand what you're looking for.