I agree, this is a great feature request because it allows consistency and relevant / contextualized information for the templates!
I think my team would use this to keep our service agreement template in so that our conference planners have quick access to what we are agreeing to for the specific ops package we’re doing.
Alternatively (bandaid for now), I think it’d work to have a task(s) with the relevant file(s) attached in the template. This could be an actual task to “review this key resource” or a reference task. This works until more files come… but that is another conversation.