Well maybe like all shows it just's a weaker season, I'm wiling to give Season 4 chance as it could be very good like season 2 or at least like season 1, I just hope the show's mood is lighten somewhat and we get good world building for the other countries. As I am extremely curious what they are like in canon as opposed headcanon. Headcanons can only get you so far.

I'm also confused about how strong a single person can be without external sources. Like you guys said Glynda is by far one of the strongest characters in the show yet she seems underutilized in combat outside of the intro scene to season one, she is seen more for utility which while useful and cool I would like see what her limits being pushed in combat, which would give us a good indicator on what a normal person potential can be with Aura and Semblance alone