radio button for features=All / Selected features does not seem to show proper 'Total features' count. Sometimes I can't select 'selected features'
Expand/Contract button is disabled everytime you open window. It gets re-enabled after clicking 'repair intersections' but not disabled after unchecking 'repair intersection' again.
Remove partitionby radiogroup, actually make it do something change the default from firstlast to diameterpoints or farthestpoints.