With a movie like this, there were a ton of people. Either they were main characters or they were background characters, not much in between. If (BIG if) they could have gotten some of the big names to sign, we'd have some cool people--
Adewale Akinnuoye-Agbaje (Heavy Duty)
Christopher Eccleston (McCullen/Destro)
Joseph Gordon-Levitt (The Doctor/Rex Lewis/Cobra Commander)
Karolina Kurkova (Cover Girl)
Byung-hun Lee (Storm Shadow)
Sienna Miller (Baroness)
Rachel Nichols (Scarlett)
Ray Park (Snake Eyes)
Jonathan Pryce (U.S. President)
Dennis Quaid (General Hawk)
Channing Tatum (Duke)
Arnold Vosloo (Zartan)
Marlon Wayans (Ripcord)
Four of the above have autos out there already, but still.