I want Asami to be exactly what she appears to be: The Perfect Girlfriend™. She loves bending, she's considerate and empathetic, missing parents give her and Mako something in common...on the surface, she's a perfect match and an ideal subversion of the apparent Korra/Mako shipping in episode three. Asami's existence is worth it just to mess with shippers (mwahahaha!) and to be another thing making Korra's life more complicated...and more interesting to we viewers, I say.
Amon's reasoning made sense and his hardcore intimidation of Korra was pitch-perfect. He's savvy, he knows what he's doing, he exudes menace, he's in it to win and has no interest in playing fair. He's been 100% sold as a villain and just think, he hasn't even done much of anything yet! Brilliant.
There's no doubt in my mind Korra's flashback was showing off the older Gaang. It had Aang fighting (Korra even called him by name), it had Toph, and who could that slim older man be if not Sokka? I can see Aang's pals all being involved with Republic City affairs in some way. Now we just need to see adult Katara sometime. And maybe a little Zuko if they're very kind...
Looks like next week will be a lighthearted break with the focus on Pro Bending, which feels right to me. Perhaps this will help Korra get some of her confidence back.
I would suggest that it's not the medium, but the quality of perception and expression, that determines the significance of art. But what would a cartoonist know? -Bill Watterson