Restriction of SEQUENCE of ANY

Please add this to 1.1, it is so much easier than using substitution 
groups!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Schema now allows one to do sequence of ANY, and restrict ANY to a 
namespace.   I would love the ability to restrict ANY to a certain type and 
subtypes of that type.  Is there a reason not to do this??

<complexType name="basetype">
	<sequence>
		<any restriction="myType" maxOccurs="unbounded"/>
	</sequence>
</complexType>

This would allow only a sequence of elements of type "myType" or 
restrictions of "myType",  And would allow the following!!!


<complexType name="newtype">
	<complexContent>
		<restriction base="basetype">
			<sequence>
				<element name="e1" type="myTypeRestriction1"/>
				<element name="e2" type="myTypeRestriction2"/>
				<element name="e3" type="myTypeRestriction3"/>
			</sequence>
		</restriction>
	</complexContent>
</complexType>

thank you,

Joseph Coyle, MD
Medical Informatics
Intermountain Health Care