Aaron,
I differ with others opinions simply because I know about the rabbit holes
that will show up between Web usage and Industry usage.
*TL:DR - your going to need much more than just 1 new Type.*
The reason I say to just sorta "try to get by with this method for now" is
that Schema.org is missing a lot of fundamental Types for Asset Management
(Content Management) itself as needed by lots of industries, beyond just
The Web model Types that we currently have and that address a different
need entirely. So yes, I agree that their are LOTS of Types needed for the
long tail domains. I am one of those folks constantly asking for more
broader Types to be added to Schema.org to cover use cases like yours.
However...baby steps I have found are probably best and even better is when
we get industry experts actually involved in the process, because we
typically get it a bit skewed sometimes, not all the time, but sometimes..
Since I do know a bit about this domain, I can give you a bit of advice.
There are particular terms used in the gaming, broadcasting, and filmmaking
industry. 4 that come to mind that you actually need for your Asset
Management use case are:
*Asset* - The broadest Thing, and typically would be considered a subclass
of our CreativeWork (in Schema.org that term Asset would be considered too
generic and we'd probably get votes to have this as MediaAsset or
somesuch)
*Scene*
*Sequence*
*Setting*
It sounds like you have a need to correlate your objects to one or many of
those 4 industry Types.
Long term, we'd probably want to adopt an external schema or vocabulary.
Many of which already exist in the gaming, broadcasting, filmmaking
industry products and tools that typically deal with it as METADATA.
Here's just one example of that sort of product to give you an idea in the
broadcasting industry, http://www.avid.com/products/interplay-mam At
Ericsson, where I work during the day, we also have platforms that manage
assets, handling streaming, decoding, etc
https://www.ericsson.com/ourportfolio/media-products
-Thad
+ThadGuidry <https://www.google.com/+ThadGuidry>