It feels like I am missing something with this game. I'm going to throw a bunch of observations and questions into the comments. I hope you do not mind.
I see ways for a PC to get negative effects applied to rolls: Stress, Threat Clock levels, and minor injuries. Are there ways to get bonuses, other than PP usage during training powers/getting control of your powers, Allies, and having 3+ Corruption?
Other than narrative flavor, is there any benefit to having powers in the game? It seems more beneficial to use Power Points for rerolling dice rather than investing them in Powers, unless you're trying to achieve one of the victory condition. There is also mention of spending Power Points to activate powerful abilities. I don't see any details about that, outside of the "Excess Power Points" section that comes into play after achieving one of the victory conditions.
Is there a way to reduce the Threat Clock, other than with a Network Contact Ally? There are a lot of ways for it to go up.
You're encouraged to think about your approach during missions and other challenges. That's generally good practice, however I do not see a difference beyond narrative flavor between sneaking though a villain's base and plowing through walls Juggernaut style. You're background/skills/power don't come into play. Further, there is no mechanical difference between an underachieving high school student, a veteran police detective, or world renowned wheelchair bound scientist. I'm wondering if that is intentional or if I am overlooking something.
Something I like about Legacy's Edge, other that it being a solo superhero game (wooo!), is the Global Clock System. Having the clocks setup to trigger plot events is a really neat idea.