Is it possible to give/make a script for "asset creation" (could be accompanied with a small tutorial...)?
Created components/assets then could also be uploaded by users to your cloud (?) - and you could instantly have an "ever widening library" of assets.
From time to time someone of your stuff can control it, and upgrade or delete it from the library... depending on your quality standards, or so.
I believe this would give you/us an additional boost to your genial render engine...