In general the character feature is good, but it could be great if the following was possible:
Enable writing your own character description groups and questions. The default groups and questions are just too many for my taste.
Alternatively make it possible to hide irrelevant questions.
You could also make this generic. A grouped set of questions could be used for many purposes.
Make it possible to see all groups and questions in an expanded view. As it is you have to click too much to see the various groups. Such a view could be shown at the bottom of the character screen. Questions that have not been answered could be left out.
In general the character feature is good, but it could be great if the following was possible: