Ah, a fellow nerd~
I'm not an armorer by any means. And, I think, most people aren't. It's amazing just how much effort was needed to get through such thin armor plates. Not only that but if you have a huge bugger-all AoE attack like she does, you can probably get away with wearing anything you want!
Arielle is great. I love her design. I have a fondness for the slender athletic types and I'm one of those weird people who likes smaller breasts in general. Plus, it makes sense for a soldier to be fit. She looks like she would be better served with lighter armor, which I suspect might be something that happens in the game. I also have soft spot for the earnest, straight-forward and kind-of awkward types who are always too formal.
The succubus was really fun, too. She was enjoying herself and playful but never came across as annoying. In general, I did enjoy the writing and the decisions by the characters made a lot of sense. It also made sense that she folded like a piece of paper if anybody got to her. Satin slip makes for good mobility but poor protection.
I may be a silly person but I enjoy more serious narratives with people making the best of their situation. It makes the quiet, funny or tender moments feel much more impactful... You know, in my porn games x3