Hi,
I just re-evaluated side-labs to find out that it still misses the feature to derive Aspects.

If you look into the modelSchema.xsd and the UML diagram present at the alfresco Data Dictionary Guide wiki page, you will see that Aspects can have parents as content types do.

I would highly appreciate this feature to be present in one of the next Side-Labs releases!

Property overrides are not supptorted as well.

Regards
Jörg