This really belongs under both keyboard and Keybaord Accessibility
components, but I couldn't select both...

gnome-keyboard-properties & gnome-accessibility-keyboard-properties both
allow the keyboard repeat rate & delay to be set (which is duplication of
effort--I really don't think it should be in both places, since it does the
same thing).  However, they allow different ranges for the repeat rate and
delay.  I will shortly attach a patch that fixes this so that the ranges
are the same.  The patch won't fix the fact that there shouldn't be this
duplication.

Also, when the duplication is deleted, the
gnome-accessibility-keyboard-properties has a better UI.  The text boxes
allow for fine-tuned controlling and an idea of what the rate really is. 
So, I vote that it has the right UI to use.