Potential for easy reduction
Before & after comparison
- Reduced height of label set widget
- Utilize more horizontal space for tool buttons (4 instead of 3 columns)
- Renamed "slim mode" to "compact mode" (preferences) and increased number of tool button columns to 6 in compact mode
- When there's more than 3 labels, the label set widget switches to its full size (still 1 row less than before)