I think it's interesting that most of the YJ episode took place in a single cave. That's quite an unusual approach. Too bad they couldn't make the entire episode take place there.
The problem with episodes with this many characters in play, though, is that the show can only afford to pay so many actors per episode, so a bunch of the heroes and villains end up uncharacteristically silent.
Over on GL, I liked Hal's reaction to hearing that the new GL of Earth was John Stewart. "The fake news guy?" I wonder if this will get mentioned on The Daily Show