The recent revision (will be in 0.9.2 release) added feature to customize toolbar.
use large icon
rearrange what is shown on toolbars and menus. It can be safely reset to default layouts
show/hide the text and image on button
Together with panel and task/note-view customization the user can set the display ranging from very simple list-only app to a more complex view. Below is the example on how the gui can be customized to look really simple.