I see what you're trying to say, and I think you're on crack (i tease b/c i love). I do understand your point of view but I think you're making an awful lot of assumptions based upon select information framed in a way to reflect your worst nightmare.
Let me give you an example. Now, I'm no expert on hi-fi, but I do actually own a pair of E530s, and I've had them for a little over a month. And I can tell you that the cable appears toughened, in that the part that wraps around my ear has molded itself in the shape of a curve, to the point that it actually fits the contour of my ear and consequently stays in place better. It's possible that this shaping was an intended effect, something that Shure researched and intended. Maybe, right? (Of course, if my wire breaks down the line, I'll be singing a different tune!) Really, I have to wonder how common this problem is, as others have pointed out, you mainly only hear from complaints.
You're also working yourself up over something that probably won't happen over a pair of IEMs that you're convinced are perfect for you but that you've yet to try. Do you see where I'm going with this? You can fantasize and analyze for the rest of your life looking for what you think you want, and never actually get it, or end up getting it and realizing it's not what you wanted after all. AKA there's a whole lot of energy going into conjecture here without any actual experience. You've (clearly) done your research, you made your best choice, your 530s are on the way, and soon you'll have your own experience with them, which is MUCH more valuable than anything I can tell you or anything you can fantasize. Heck, forget the wire, you may want to return them based on sound. Try to relax, at least until you get them, and maybe revive this thread in the future IF your wire breaks! Until then, we're just mentally masturbating here.
He did say, however, that they have seen the same problem with just about every one of their other earphones. (As far as having the same frequency of failure I didn't ask, but I can't image it being even close to that of the E500.) Anyway, he did say that I should call his direct line back in a couple weeks after I have gotten my E500's to see what I think. I'm pretty sure they won't have broken by then, but I'll at least have something to say.
By the way, mentally masturbating? XD Alright...