When I add a statement the property-selector as well as the item-selector automatically show properties/items that are used often for this type of item/property. When I add a qualifier the item-selector does however not suggest the most common items for the used property.

This should be added, since a lot of the properties used with qualifiers use only the same few values, therefor a lot of work/time could be saved. And especially: it's pretty annoying to always type the same few things!