You don't want to skydrop on Sub Zero, that's true. I learned that the hard way. With all respect Konqrr, the Ice clone business, I don't buy it. A good sub zero player is going to be putting his clone on screen a lot during the match, so you should never be really guessing whether or not it's going to be there. Because, you know it will. So I don't find it hard to read.
Another example....
Let's say a subzero player is putting on pressure. He's using 2, 1, 2, clone on block, 2, 1, 4, clone on block, etc. If you read this properly you can Trance or Ex Trance after the last hit when he goes to clone. Jump back and set up your combo.
You have some pretty good points, but I think Quan can make it equally as tough on Sub as Sub makes it tough on Quan. Jumping is out of the question, obviously, and like I said, trance beats frostball. I still stand by 5/5.