I m very disapointed with Sera, she's a great character and she's lesb only, this is dumb because I really like her, she should be bi 
So what do we have for us guys ? Cassandra ? Meh don't like her personality and she has a guy face. Vivienne ? Sorry but I m not attracted by black women (and don't like her personality at all), there is Scribbles and she seems to be black too... 
Well I will have to wait for Mass Effect 4 and i hope Bioware won't do a poor job like that on male romances this time.
The cruel person in me kind of hopes that ME4's only female LI other than an asari is a female turian and possibly even the first female batarian to be shown in the franchise. Anyway, it's this kind of attitude that fuels the schadenfreude that goes on about Sera. She only has to be what the writer wishes her to be. It would be the same as saying that Morrigan should have been bisexual.
As for the ethnic thing, I'm loath to get into that issue, because aside from being a matter of personal preference, it can lead a thread to bad places, but I don't really see the point of this mention, because this is no longer about options for guys, but rather options for you (though arguably the same could be said about Cass' appearance). In that respect, I see no reason to be sympathetic.
On that note, am I the only one that is a little disappointed that a female Warden simply cannot join Morrigan into the eluvian?