Reading through it right after my first playthrough has helped me to settle a good deal of questions of the 'is this a retcon, or did I miss something?' type. The author's sense of humour is rather... peculiar though, so I'm not sure if everyone would like that aspect of it.
I was reading the LP when it was in progress and I gotta say... what bothered me is that a bunch of people in the thread were pretty much bashing Xenogears. And the author seemed to have mixed feelings about the game (but at least, he did like it overall so that's cool). Still, the game has flaws so... I can handle criticism and those kind of parodic LP that make the flaws and dumb parts of the game more obvious (well, the authors can sometimes exaggerate too but those are parodies anyway).
Overall, I can say I had fun reading the LP alone... and there is also this one (which is incomplete) : http://whatdoesgodneedwithastarship.com/
Anyway, I came to post this : https://twitter.com/Subeaki/status/467908393370263553/photo/1
I don't know where the page is from but apparently... those are various old concept arts from Square.
Fei can be seen... and from the look of it, i'd say Soraya Saga drew him.
He had shorter hair, no crazy lock of hair and the pants reminds me more of the stuff Sigurd wears.
I have to say, Fei looks better with bangs (I'd just prefer him with a tamer hairstyle that the one he ended up getting though)... and slightly shorter hair (like Elly, I think their hair look WAYYY too long *still, here, I think the ponytail looks too short ahah*... and Elly's are completely inappropriate for the military... I could see her wearing a bun and rocking it to fix that... however, that's not the only part of the female Elements design that seem inappropriate in a military context lol, even if this military = basically fantasy sky nazis... Citan used to have shorter hair as an Element though sooo*)... and the pants reminds me more of the stuff Sigurd wears.