I like these ideas. Maybe you can also search for non-characters as well? I still like searching for codes and templates using the browsing system so why not have that? Just an idea I got. And an option to search for either or just one would be nice too.
And there's a listed/un-listed feature for characters currently? Correct me if I'm wrong, but I think that feature is there for when you don't want characters showing up on the browse list or something. I just felt like I needed to point that out oof.