Please enable us to use @Strings.foo as default value in the properties. The idea is to be able to provide a language specific default value, but enable the user to edit it.
Maybe something like:
<property id="foo" type="string" default="@Strings.foo"></property>
<settings propertyKey="@Properties.foo" title="@Strings.fooTitle">
<settingConfig type="alphaNumeric" maxLength="10" />
</settings>