About DA:O, I kind of assumed the lack of many female grey wardens was due the risk of being captured and the whole broodmother thing. Kind of a huge risk and a terrible fate.
Wait what? *Checks the wiki* Oh, of COURSE.
So female captives are "usually" transformed into literal baby factories with hanging tits. Through forcefeeding.
First day, they come and catch everyone.
Second day, they beat us and eat some for meat.
Third day, the men are all gnawed on again.
Fourth day, we wait and fear for our fate.
Fifth day, they return and it's another girl's turn.
Sixth day, her screams we hear in our dreams.
Seventh day, she grew as in her mouth they spew.
Eighth day, we hated as she is violated.
Ninth day, she grins and devours her kin.
Now she does feast, as she's become the beast.
Now you lay and wait, for their screams will haunt you in your dreams.
This is from a woman dwarf Captain, cool, except she falls to corruption and "allowed the members of her expedition to be captured by darkspawn in order to breed more darkspawn". Those silly women, huh? Give them a little authority and bam, they're leading their squad into a rape trap.
But darkspawn are evil, of course. Surely they do something awful to the male captive too! Maybe it's just as vile and sexual. Heck just look at the broodmothers, there's no reason they couldn't have been male captives. So I look up the answer...
Oh, they work as craftsmen.
To be fair, people of both genders are commonly eaten. But that's what happens to the survivors: skilled labor, or raped into fetish fuel, depending on gender.
Also I think the female representation was fairly good honestly. Top of my mind the prophet of the maker was female, as well as most of the church's clergy, wich is a stark contrast with most religion irl. There's also the possible ending of having a queen crowned, or having the player character become queen regent, so female leaders aren't out of the question. The leader of that elf group chose a female as his succesor. The dwarves have female paragons, including the one you meet. Admittedly they do have the rigid caste society thing going for them. The sequel (wich I shall not name!) also had a female leader for the templars wich is a fairly hands on male dominated organization. I'll not include flemmeth since she isn't really part of the settings society. But yeah I don't know, seems equally represented to me for the most part.
About fantasy settings sometimes being male dominated. It's a fairly natural thing to do since most inspiration for these settings is drawn from medieval times. It's also a little cliche. I don't see anything necesarily wrong with it, it's a work of fiction and it can add flavor to the setting.
That said, I certainly wouldn't mind a fantasy setting with a female dominated society. Definately a change from the common male dominated/gender equal settings. Whould be interesting, I'd totally play it.
This isn't a historical setting, though. Character creation says the genders are equal, and I think they're equal under the law, but then they filled the setting with people who openly scorn women - often directly to the (possibly female) PC's face. It's a cheap way to make the setting seem more real, and a missed opportunity.
Side note unrelated to the above points: The charismatic infiltrator demons who trick people into bad deals. Are they professional looking devils? Shapechangers who look human? Of course not, they're naked purple succubi. And yet people fall for their tricks because, uh, exposed boobies I guess? I can't imagine how they convince straight women or gay men of anything.