Features (Android and other)
A lot of people talked about changing font, so I won't discuss it besides saying I personally hate the current font because I think it's kinda ugly, and that there should be a default font setting.
These features should be for ALL users to access for free.
Ability to deselect pens and things so you can swipe through pages easier.
Custom handwriting font tool: being able to set up a personal alphabet font to freely use.
Free shopping options in market.
Save/import from Google Drive/selected apps & Websites.
Increase free editable notebook limit: Only 3? C'mon, be real. Some don't have cash to spare for apps like these.
This might be a lot to ask for, but this is the stuff that I think should be added or at least considered.