Blast from the past, back on the old boards, when the writers hadn't abandoned the forums quite yet...
Patrick Weekes gave his opinion on both Ash and Kaidan.
The Chief:
Ash: A strong woman who is attractive but not hypersexualized. I really liked her military bent -- adding her (after talking to Chris, who wrote her in ME1) to the Nirali Bhatia plot makes it a little stronger, I think. "The corrupt heartless military" is used often enough to be a cliche these days, and it was nice to have Ash there as a character with a conscience, reminding people that the people who died on Eden Prime were PEOPLE.
Sadly, Ash suffers from two problems:
1) She's human, and humans get hit harder than aliens by fans. I suspect the uncanny valley is involved -- if Wrex were just a big human guy, people would think he was a pointless thug. People see Wrex or Garrus or Tali and go "Oooh, new alien!" They see Ash or Special K and go, "Oh, wow, a human. Never seen one of those."
2) Her humans-first lines were frontloaded enough that a lot of people saw that and got turned off, never getting to the deeper parts of the character that gave her a more nuanced view. Next time we do a character like this, we're going to try to make the deeper parts a bit harder to miss. (Not impossible. You want to write somebody off, you still can. But we don't want you to have to look for it as hard.)
Kinda makes me wonder... was Kelly the next "human first" character? If so, I'd say she was frontloaded too much to the other direction.

But I digress...
"Special K" next, as Mr. Weekes calls him:

Kaidan: The concept here was essentially, "The guy who suspiciously does not have issues and doesn't need you to fix him." He's one of the big info-givers in the game about biotics, which was fun, and Sbarge does great delivery of wry, bemused lines.
Like Ash, Kaidan suffers from being human -- which is really tough, because you don't want Shepard to be the only human on the squad, but MAN, as soon as somebody gets correctly bending knees and working lips and a visible face, the bar gets raised on what we need to do to make people like them. I think that that's because people see being alien as a hook -- and so if you make a human follower, that human follower needs more of a hook than you expect, since they don't have that alien-ness to draw people. I really liked Kaidan.
Of course, he likes all other four squaddies as well. But still, ON TOPIC (

), it's nice to see a Bioware dev write something about the VS. It really seems at times they've been completely forgotten. Tho of course this was in October 2009... The challenge is seeing something mentioned about the VS AFTER ME2 was released.

Still, there's a lot of other fun stuff on that thread. Go read, if you weren't around on the old forums.
http://meforums.biow...&forum=144&sp=0