Exporting the current page as an image to Facebook could be convenient.
Export the current page as an image to Twitter
Add the ability to search when browsing from the remote services that support it.
Add support for doing formatting inside the text editor with different fonts and colors within one text object.
Also add the ability to define a border color.
Add the ability to limit the size of the drawable area in one page to just fit one visible page and don't allow drawing or moving outside this area.
Add support for importing CSV files and also drawing and editing charts and tables inside a note.
Add the ability to attach sound files into a note.
Would be interesting to add support for drawing with layers inside of Toad like you can do in a regular paint program.
For different purposes I am Using different googledocs accounts. Thereof it would be advantagous to access them all
In the new Version 4 I expereinced in certain cases that wrist laying on the wrist protection area and writing will be interpreted as an IOS5 multitasking gesture.
Add an ability to somehow specify how large the auto advance window should be in the mirrored view so that you can get the text to advance further or shorter.
I experienced that if I annotade a pdf in magnified mode (hand pinched above 2.0 scale ) that handwriting annotations will not be placed at the right position in the main window.
As a leftie, that would be VERY useful.
Add an option to move the remote services back to the top of the notebook list as it was before version 4.0.
The same option could also affect the insert document window.
When in "normal" handwriting mode the same scolling (manual and automatic) mechanisms could be offered, regardless in which magnification. That would give more flexibility and avoids need to switch between view modes if using different tools (e.g. Line tool, handwriting tool).