A female gang of mercenaries is the wrong way to do that film. None of these actresses ever played the stereotype of a badass special forces soldier like Arnold, Stallone, and Norris did.
Huh? A bunch of them have played those types of roles. Off the top of my head:
Michelle Rodriguez was a SWAT police officer in SWAT, an Air Force intelligence officer/forward air controller in Battle: LA, and an Umbrella Corp. commando in Resident Evil.
Angelina Jolie was trained by the SAS in Tomb Raider, was a CIA field agent in Salt, and was a spy/mercenary in Mr. and Mrs. Smith.
Michelle Yeoh was a Chinese spy in Tomorrow Never Dies.
Linda Hamilton trained with a bunch of ex-military, mercenaries, and criminals to gain knowledge to make John Connor a Resistance leader in Terminator.
Milla Jovovich was a security agent and essentially a human weapon in Resident Evil.
Vivica Fox and Uma Thurman were members of a mercenary assassination squad in Kill Bill.
Rhona Mitra was a commando in Doomsday and Stargate Universe.
Helen Mirren was an assassin/spy/weapons expert in RED.
Gina Carano is a spy in Haywire.
Maggie Q is a spy in Nikita and a mercenary in Die Hard 4.
Grace Jones was an assassin working for a guy who was himself a former Russian spy in A View to a Kill.
Scarlett Johannsen is an assassin/spy in Avengers/Iron Man II.
Katee Sackhoff is a pilot, soldier, master strategist, angel in Battlestar Galactica.
Jennifer Garner is a spy in Alias and a ninja assassin in Elektra.
Summer Glau is a human weapon/assassin in Firefly.
Jessica Alba is a genetically engineered supersoldier in Dark Angel.
Kate Beckinsale was a spy/field agent in Total Recall.
Yvonne Strahovski is a spy on Chuck.
Demi Moore was a Navy SEAL in GI Jane.
Halle Berry was a spy/field agent in Die Another Day.
There's a lot more but I think that shows that they have played plenty of the badass soldier/spy/ SWAT officer roles.