It’s very hard to take something like how the device “feels” to draw on and convert that into something engineers can use. I ended up describing it in terms of speaking. I said drawing on the Pro 2 was like having a conversation with someone. With the Surface Pro 3 I feel like I need to either whisper or yell to have the same conversation. I had to press very lightly or very hard, and it changes the way I draw. I was also able to show them some of the lag I was noticing. They could all see me draw a line and watch it pop in a split second later.
There is a reason why Wacom dominated its niche for so long, even in the face of inexpensive asian knock-offs. (1) They had this stuff right. (2) Hackers who are perceptive enough that they don't underestimate the difficulty of getting this stuff right are a very small minority.