It's the third season now for Justice League and now there are more heroes among them

Among the new heroes are Supergirl, Green Arrow and Captain Atom. Since there are more of them, the producers have decided to call the show "Justice League Unlimited".
I'm now collecting the third season since I already have the 1st season and currrently acquring the second season.
Another noticeable difference is that most of the episodes comprise one whole story unlike the previous seasons wherein it takes two or more episodes to tell a whole story.
I like the series so much. How about you?