Ok, I'll get it started then.
Add 8-12 year old characters in the game, because let's face it, a ton of underage players play COD.Child soldier comments, anyone? Have I gone too far? Same principal argument though.
Perhaps the female character argument should be that there could actually be 1 in 100 in-game characters as a female (to represent a speculatively reasonable percentage of Black Ops 2025 soldiers). This should be random though, so that the player gender is irrelevant to the character (as age, nationality, culture and religion currently are).
Choosing gender will likely cause a direction-change or distraction in terms of what COD is. I can imagine so many males choosing females and this will not only change the face of the game (literally) but also the realism and quality.
Unless, you mean there should be a gender control on PSN...?