The ideal team would be
>Boomerang
>Deadshot
>Javelin
>Peacemaker
>Polka Dot Man
>Ratcatcher 2
>Rick Flag Jr.
>Weasel
Cut everybody else. Yes, that means Harley, she's fucking annoying. Same general plot as The Suicide Squad. Deadshot is more of a background/utility character, Rick Flag takes up Bloodsport's role, including the father/daughter relationship with Ratcatcher 2.
Weasel effectively replaces King Shark and similarly befriends Ratcatcher 2, and her rats.
Flag's death plays out the same way, but instead of Peacemaker being confronted and "killed" he simply escapes, only being stopped by Boomerang who witnessed the fight, but makes no attempt to stop him, only mouthing off a few melodramatic Australian words of wisdom which, along with Flag's dying quote, continue to haunt the character into his titular TV series.

Why do you never see aliens in space suits? Like, actual aliens, not just blue humanoids. Why do they never need suits, or any type of protection in general? They're always just perfect and they've adapted perfectly not only to their environment but every other environment they find themselves in.
Piss off.