Part of me says to go with an Alien CO for the next show, we've had five human CO's. So perhaps it's time for something different.
Perhaps I'm in the minority but I'm less concerened with thinngs like the gender of a character and more concerned that they are well written. We as an audiance/reader can identify with a particular character(s).
But I think perhaps the next show should scale back from having 7 or so leads to 5, CO, XO, CMO, CEO and Tactical/Security. That covers your base story telling.