My thoughts are, its basically been confirmed to a certain degree, though I don't think any devs have come right out and said "Yes you can customize your character". If there is customization, it should include accessories, headgear, and.... I dunno what else. It should be limited so that you can't dress up your character to look like the opposite faction that you're playing against, but enough customization that not every character is identical.
We should be able to disign are look for each class of gun, for each map. That way we can design ghillies for each map. Cause one universal ghillie doesn't work on every map. Plus you could design it to blend in with the area of the map you are most likely to snipe from. Just to clearify, in the options menu you could adjust your SMG suit for makin (to use a familiar name), your LMG suit for makin, your rifle suit for makin, your sniper suit for makin, your SMG suit for downfall, Etc. Very indepth. It would add it another interesting thing to this game.