Sideshow's NOT dumb, one major thing they do is listen to their fanbase. the "realism" aspect that they're striving for is more equipment based than anything else. I expect what we will see will probobly be a mix of GI joe reloaded designes, with a more classic feel. the design sheet for cobra commander is a good example of this.
Also, if it's something that truly worries you, contact sideshow directly, either via e-mail, their chatroom, or the ask sideshow section of the freaks board. the exects, and sculptors, and designers frequent it. (
http://www.sideshowcollectors.com )
And don't forget that hasbro gets to approve the final design.