I've had both male and female only teams, now I'm combining the two and adding several others to the mix as well, just to be different.
Team Leader - Benjamin Sisko - Loyal, brave and a bad-ass fighter, you know he'd do whatever he needed to in order to get his people through.
Betrayer - Winn Adami - She'd go along with things for a while until a situation arose she could use to her own advantage and screw the others over at the same time.
Brains - Jadzia Dax - 300+ years and eight lifetimes worth of knowledge and experience, add to that her scientific mind and how she handles a bat'leth and its not hard to see why she has to be on the team.
Brawler - Kira Nerys - Trek's best fighter (IMO), taking on several security guards when heavily pregnant and beating up Klingons with a knight in her side, not much will stop her.
Child Who Somehow Survives - Naomi Wildman - There always seems to be that one kid who makes it through when many adults don't, seeing as how children in Trek can be quite annoying (Wesley), she was the one that stuck in my mind.
Coward - Reginald Barclay - The one who runs away at the first sign of danger, which sees him survive far longer than most. It had to be Reg.
Dies First - Nu-Uhura - This was tricky, Neelix or Nu-Uhura? Fortunately Neelix is in the past and can't do any more damage, Nu-Uhura is unfortunately here to stay, so she has to be the one who gets killed off early.
Fixer - Miles O'Brien - He'll get anything and everything working to keep them going just that little bit longer. Since the team will face a lot of hardships and general crap, it had to be O'Brien.
Getaway Driver - Hikaru Sulu - He can pilot just about anything, a handy skill when they finally manage to find a way out and need to get going quickly.
Mascot - Morn - What's not to like about him?
Medic - Selar - With Vulcan calm and detachment, she can handle any injury or crisis they face in a dispassionate and practical way, which will ensure that those who can make it through will get through.
Rookie - Kes - The wild-eyed and awe-struck newbie on the team, inexperienced but willing to get through it. Plus when things get really bad, they have her serious mental powers to fall back on.
Shirtless Guy - Charles Tucker III - Hot, buff eye-candy. Nuff said.
Speed Fighter - Data - With Android speed, dexterity, strength and agility there wouldn't be much he couldn't handle, plus zombies wouldn't be after an artificial life-form.
Tanktop Girl - B'Elanna Torres - There is always that one woman who always goes around in little more than a vest and no one really fills one out better than Ms Torres (IMO).
Weapons Expert - Tuvok - What he doesn't know about weapons and combat isn't worth knowing. He also understands the logical use of violence and can apply it whenever and wherever needed.