It would be nice if the non-mandatory attribute FriendlyName could be added to the RequestedAttribute elements of the SP metadata. SATOSA (incorrectly) breaks on them missing.
e.g.
<md:RequestedAttribute Name="urn:mace:terena.org:attribute-def:schacHomeOrganization" NameFormat="urn:oasis:names:tc:SAML:2.0:attrname-format:uri" FriendlyName="schacHomeOrganization" isRequired="true"/>
IdentityPython/SATOSA#497