On Cora Harper:
BioWare / EA needs to get better, smarter writers. This was a storyline that just failed from top to bottom. Why? Because it failed to incorporate themes evident in the first trilogy.
One question nagged me: why would the Asari ever allow a human to run with their elite commandos? The only answer I could think of: they wouldn't have.
Asari are assimilative, but, cruelly, extremely prejudicial and seemingly arbitrary. They understand prejudice because they must assimilate all races; yet they are ironic because they marginalize "pure" Asari and those they consider to be "dangerous" aberrations. They also enforce their traditions harshly, as evidenced by Samara.
So why? It doesn't make a lot of sense to me. The entire idea of it was jarring.
So, I figure: maybe Cora had a shit time of it. But, no: she apparently was a liked-and-well-respected member, even if she was removed from the order eventually. And she never gets into why, really, but I suppose you're just supposed to believe that it's because she's a beta, not an alpha.
I felt like the writers missed an entire angle that would have made the character deeper and richer. Of all the races, the Asari are the most interesting to me (if only because I adored Le Guin's The Left Hand of Darkness as a kid). Yet they do the least with them, whereas they can obviously create richness with other aliens, like the Krogan. (Drack is, by the way, the best.)
sigh