What issues?
There are no issues.
Mixed male/female crews and combat units are effective and fair.
There are no problems. Ever. None. Really.
Because being "fair" trumps all other considerations.
Honestly, the SJWs who are running the Defense Dept. would gladly lose a war before admitting mixing male and female crews and combat units is a mistake. As far as they're concerned, a lost war and many dead is a small price to pay for fuzzy feelings and "equality."
One lost war and we become England—a former great power living on memories. China would insist we have a communist government—For peace the People would elect “Peace Democrats” and the crack downs would start.