I would love to see them with full replaceable cable but somehow not compromising the form factor if possible.
I would hate to see them over the ear!
The comfort of wearing them straight down, shallow insertion and speed of inserting/removing them for a second when needed were major factors for my decision! Kept me away from Sure SE846.
Today I was out with my Westone W4R and I remembered all those problems. They are over ear deep insertion type. First of all, get the cable over the ear, get mixed up in hair if you have it longer or in/over glasses bracelets, collar maybe, then put them in, open your mouth to fit correctly, move your head left right to get some cable relief, notice there is no bass on one of them and do again the open mouth push and spin move. Now you`re good, but the very next second the seller keeps telling you something when you try to pay for the shopping, you try to understand, it`s impossible, your hands are full of bags, put one down take the iem out, solve the problem, do all the ritual of insertion, mouth opening, head rotation bass is not good again, fiddle with it some more, you`re ready and bam! A friend of yours comes laughing and talking straight to you and you know it was all for nothing, you will start over!
Then in the car...if no one asks you anything, you will get a crrrazy itch in one of your ears because of the deep insertion, moist air accumulated, you take it out, light goes green, you start moving, shift gears, try to put the iem in, doesn`t fit, shift more gears, push the iem some more, spin the head, doesn`t sound right, looking for a red light to fiddle them some more! In the end you get some kind of light irritation in the ears from the sweat and fiddling inside.
I`ve had enough of that!
With ie800 i really forget they are there, no pressure in my ear, no wires in my hair, I really need only 2 fingers to put them in or out in less than a second, bass is always present and so on. It might be just me, hating the over ear wires and never having problems with ie800 tips (yet), but that`s how it goes for me.