On the surface, I have no problem with it––as long as the standards aren't changed. I say let women do whatever they want to do, as long as they can do the job, and the standards aren't changed for them. Let the best person do the job, regardless of testicle ownership.
BUT––and like mine, this is a rather large but––I have never served in a combat unit, let alone Special Forces.
There is a very good chance that a bond, or morale, or small unit cohesive force, esprit de corps, whatever you want to call it––could be shattered by making it co-ed. Maybe this is a stumbling block that needs to be overcome, or maybe it's just not a good idea...I don't know. I certainly see the desireability of it: Seems to me that a woman might be great camoflage in many situations, or not even considered a threat (until it was too late). I don't know if there would be drawbacks, and how powerful these drawbacks would be.
Seems to me that the only people qualified to make this choice are SPECOPS bubbas. I don't think it's something that should be treated lightly.
Let SPECOPS determine if it's a good idea or not.