More filters more this more that, the way a lot of you are talking you want to be able to push a button and it make a sig for you, you can achive a lot by mixing filters and brushes.
The pen tool is already easy if you know what your doing. It helps make smoother lines by making you do a curve.
The main thing I would like to see is real vectoring, so it scales the points to the same size as the screen.
smoothing for the pen tool, so you can use the freeform pen tool, but either decrease/average out the amount and position of the points
Alt and double click the layer. It unlocks it. I'm about 90% sure it's alt. It might be ctrl... it became second nature to me so I don't even look. I just know it's one of the buttons down in the bottom left lol