I'm happiest with box art, posters, and so forth that portray as ambiguous a main character as possible (if indeed the main character is portrayed), but if they must pick either an obviously male or obviously female character I'd say it would be time for an obviously female one. I prefer it to be ambiguous because that sends a clearer message of 'hey, you can put whatever character you want, here' to me than any more defined character would.
In videos and screenshots, though -- especially to do with character creation -- I think it's important to include female characters and male characters both, as well as at least a few different species options if applicable. I definitely recall that part of the reason I didn't play Mass Effect for years after it came out was that I'd got the impression you had a completely set character.
Which, if either, of the City Elf Origin or the Human Noble Origin is "worse" (in whatever context you'd like to take that word)?
I didn't find the human noble origin to be very interesting, but that's probably because I tend to gravitate more towards playing non-human characters when the option is available. Also, the fact that you must have the dog put me off somewhat, as it makes me uncomfortable every time the game focuses on it, so for those reasons I haven't played that origin as much as most of the others.
While I like some aspects of the city elf origin quite a bit, there are also some aspects of it that bother me -- for example, how different it is between the male and female characters, with one being captured and freeing herself and the other going in to rescue other people. From the way it was initially talked about, I had actually expected both to end up how the female origin does. I'm not sure whether that would've been
better, though, although I do think it would have been more fair/even if they had both taken the same angle one way or another. I expect some people would've become more upset about it, had both origins played out how the female one does, but that's probably just cynicism speaking. I did mostly see it as portraying how hard the elves have it in general, but there are certainly other ways that could've been accomplished.
I suppose that, while I find the city elves in general (and thus the origin) to be more interesting than the human nobles in general (and thus that origin), I'd say that -- certainly in terms of how the female characters are treated -- the human noble origin is more even-handed.