As has been (I believe) mentioned, the height of the armscye isn't the only variable in the equation. The angle the sleeve is set at makes a huge difference, as I found out when commissioning my dance tails. The sleeve on all my normal coats are set close to vertical, where the sleeves on my tails are set almost horizontal. This means that a normal coat looks great and unruffled when the arms are down by the side, but goes all to hell with I flap like a bird. Conversely, my tails look spectacular when I'm holding my arms parallel to the floor, but the combination of a high angle and the narrowness of the sleeves and armscye means I can't actually lower my arms by my side.
Bottom line, I doubt anyone will ever invent suit coat that looks perfectly unruffled no matter the arm position. The further you get from the position the coat is "designed" to look good in, the worse it's going to get. (With the possible exception of the bi-swing back, but imo that's a very odd detail for anything but a casual coat. I personally dislike the look, but to each his own).