self-intro and use case question

Greetings, 

I recently joined the working group and will attend my first telecon today. By way of intro, I'm a geographer working as a digital humanities research developer at Stanford. My project work leads me to trying to address deficiencies in existing data models, ontology patterns and such. I've begun developing a developing a data model and software called Topotime, and I was involved in the discussions for GeoJSON-LD -- which ultimately bogged down -- about adding capability to represent 'event-like' features. I'm keen to have any models I develop account for emerging W3C recommendations. 

A question about use cases: whether it is alright to add to existing ones, or better to add one that brings out further details of them -- specifically for me, cases 10 and 19 (humanities and cultural heritage for short). 

regards, 
Karl 

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Karl Grossner, PhD 
Digital Humanities Research Developer 
Center for Interdisciplinary Digital Research (CIDR) 
Stanford University Libraries 
Stanford,CA US 
www.kgeographer.org