Proposal to extend rangeIncludes of DataTypes predicates in schema.org

Hello there,
I would like to open discussions about the proposal of extending all 
dataTypes predicates ranges by their corresponding XSD classes.
This will keep 'somehow' the semantic use of the dataType predicates of 
schema.org.

Most concerned properties are:
-birthdate:  http://schema.org/birthDate
-startDate:  http://schema.org/birthDate
-endDate:  http://schema.org/birthDate

(I understand that other dataTypes properties' ranges may needs to be 
harmonised as well,  but this can be done upon specific need).

Also for
-value:  http://schema.org/birthDate

Eg. For birthDate:

<div typeof="rdf:Property" resource="http://schema.org/birthDate"> 
     <span class="h" property="rdfs:label">birthDate</span>
     <span property="rdfs:comment">Date of birth.</span>
     <span>Domain: <a property="http://schema.org/domainIncludes" href="
http://schema.org/Person">Person</a></span>
     <span>Range: <a property="http://schema.org/rangeIncludes" href="
http://schema.org/Date">Date</a></span>
  + <span>Range: <a property="http://schema.org/rangeIncludes" href="
http://www.w3.org/2001/XMLSchema#date">xsd:Date</a></span>
</div>

I would like having your thoughts on this, before I can send the proposal 
in Git repo.

Kind Regards,

Marc Twagirumukiza | Agfa HealthCare
Senior Clinical Researcher | HE/Advanced Clinical Applications Research
T  +32 3444 8188 | M  +32 499 713 300

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