XSD-Schema: group `qualifiable` definition inelegant and confusing

The current Schema uses the plural "s" for qualifiers in group qualifiable in a confusing way. For example a qualifiable property could look like this, when serialized according to the current schema:

<property>
[...]
<qualifier>
    <qualifiers>
        <qualifier/>
    </qualifiers>
    <qualifiers>
        <formula/>
    </qualifiers>
    [...]
</qualifier>
[...]
</property>

The wrapping <qualifiers> element around each inner <qualifier> or <formula> seems unneccesary. We suggest to remove it, to look like this:

<property>
    [...]
    <qualifiers>
        <qualifier/>
        <formula/>
        [...]
    </qualifiers>
    [...]
</property>

This can be achieved by changing the current version of the XSD-Schema from:

        <group name="qualifiable">
		<sequence>
			<element maxOccurs="1" minOccurs="0" name="qualifier" type="aas:constraints_t"/>
		</sequence>
	</group>
	<complexType name="constraints_t">
		<sequence>
			<element maxOccurs="unbounded" minOccurs="0" name="qualifiers" type="aas:constraint_t"/>
		</sequence>
	</complexType>
	<complexType name="constraint_t">
		<choice>
			<element maxOccurs="1" minOccurs="0" name="formula" type="aas:formula_t"/>
			<element maxOccurs="1" minOccurs="0" name="qualifier" type="aas:qualifier_t"/>
		</choice>
	</complexType>

to our suggested fix:

	<group name="qualifiable">
		<sequence>
			<element maxOccurs="1" minOccurs="0" name="qualifiers" type="aas:constraints_t"/>
		</sequence>
	</group>
	<complexType name="constraints_t">
		<sequence>
			<group maxOccurs="unbounded" minOccurs="0" ref="aas:constraintGroup"/>
		</sequence>
	</complexType>
	<group name="constraintGroup">
		<choice>
			<element maxOccurs="1" minOccurs="0" name="formula" type="aas:formula_t"/>
			<element maxOccurs="1" minOccurs="0" name="qualifier" type="aas:qualifier_t"/>
		</choice>
	</group>