So, probably the Advanced Player’s Guide will give us causes for evil and maybe neutral Champions, but there will be more after these? If would be a little strict if every CG champion must be a Liberator, every LG one a Paladin, and so on. I could see LG Enforcers, NG Defenders and CG Dreamers, just to name a few.
In the fulness of time I am sure there will be more options. Still, I imagine the devs "to do" list is pretty big, so official "other good champions" might be a couple of years away (3rd party might be a lot sooner).