Does anyone else fear that Songbird hair cut might have something to do with Screaming Mimi like maybe Songbird becoming Screaming Mimi again. I don't know about everyone else but I like Songbird they way she was with long hair and as a hero.

If you've been reading current Thunderbolts, you don't need to worry.
Songbird hasn't faced any temptations to go bad again, and she seem staunchly still good.

Nah. 
 
She got over it in her Woman of Marvel #2 story and will lead the Beta team.

I seriously doubt she will go bad again. She never really seemed "EVIL" and she was terrible at being a villain so no real reason to go back.

Just to point out, September .1 involves her hunting escaped T-bolts convicts, so I'm certain she's still good.

I dont see her relapsing into evil again. She was the one thunderbolt who fought tooth and nail to keep the integrity of them team, even when everyone failed her and they put Osborn in charge.

I just think its about time she graduated into the Avengers. She's certainly got the goods, a power set that would be unique in most Avenger teams, and she's proven herself over and over again, and frankly... sticking Luke Cage in there is like spitting in her eye. I was sure after Dark Reign she would get the credit she deserved. I was VERY wrong. They treated her like a criminal!!!

And this run of thunderbolts being quite dumb IMO, Melissa deserves a break.