Ugh... the Cassie topic again... dunno. Her personality is such a big turn-off for me that I probably have a skewed perception of her looks, especially because I really liked her (albeit short) presence in DA2. It's probably the inverse effect of when you fall in love with somebody, s/he will suddenly be the most beautiful/handsome being in the world (at least for a short while

). In brief, I find her neither pretty nor attractive; I doubt armor would have been able to make a big difference for me.
(Personally, I wasn't smitten with any of the other characters either, except with Vivienne (who is not a LI), with Cullen (who was an awesome romance IMO) and with Dorian (loved his character). My straight Femquisitor was happy, as was my gay Malquisitor, but my lesbian Femquisitor (who is usually my main character) and my straight Malquisitor weren't. Of course that's subjective, and I don't think anybody wants that "all potential LIs must look like fashion models"... but one or two wouldn't go amiss. IMO. Which of course invites a discussion of what is considered pretty, though I think looking into said fashion mags would give a handful of first ideas.)
For more ideas regarding Cassie, may I recommend the other Vicky thread?