THEY KILLED CAPTAIN FUCKING AMERICA
So, what non-mutants are left? Iron Man, Spider Man, and the Fantastic Four? Those are the only ones I can think of.
As if the Captain wasn't treated badly enough by the writers at the end of the Civil War. Now they're just pissing on 60+ years of history. I can't wait to hear the bullshit excuse they use to revive his ass.
There's plenty of non-mutants left...more than I care to list, really.
For starters, go look at the character line-up from Ultimate Alliance and ignore the four mutants. The rest, including the majority of the NPCs, are all alive and kicking in the 616 universe.
Besides, I don't see how his death is pissing on "60+ years of history", considering it's exactly what his character would do...a sniper fires a shot not at him
, but at one of the guards leading him into the courthouse where he was to be put on trial; ol' Cap pushed the man aside and took the shot himself.
If anything, Tony Stark and Reed Richards were treated far more poorly than Captain America; those two were easily written to not act in-character for the entire duration of the Civil War. Sure, they "won"...but c'mon; their characters were run through the shredder by those writers. At least they stayed true to Captain America.