I am not a big comic book guy, only returning back to them over the past few years because I remembered fondly the Avengers vs Defenders line (yes, that old). Read and enjoyed Civil War and then some others and now reading Mighty Avengers and they seem to all be one guy. Or in other words, the current line up of Power Man, Sentry, Ms Marvel are basically all the same person. They fight, have nearly unlimited power, and nothing actually threatens them. Ares doesn't fly but is the same. I read that Sentry is actually more powerful than any of them, but not seeing any difference between him and Ms Marvel and since they don't fight each other...

The Wasp at least has something distinctive (size). Through the first 7 comics in the run I'm not sure that Black Widow has been important to be on the team at all.

Not a bad series, mind you, but just seems like you've got a lot of god tier power and not much threat.