After reading the manual, I think this area could be beefed up with an example or tutorial.

I think templates are a large key for 3DGS because:
a) they allow a novice to get quick results. Often a novice w/o early success will give up.
b) they allow experts to save time
c) they fill a niche left open by most other engines.

By beefing up the tutorials users can of course more easily contribute templates.