Option 2 is my preferred option, but with a serious modification…

[quote=@Liotrent]2. Playing as a super modified elite soldier with special powers. Sort of like Spartans, if Spartans gained different unique powers after getting their serum.[/quote] This sort of piques my fancy. How about soldiers with enhanced prosthetics? Instead of super powers of some sort like Captain America, how about guys who have been in combat one too many times and are now beneficiaries of science / technology and equipped like Cyborgs; human brains/bodies with some high speed limbs, eyes and/or ears?