Tier 1 elements are the most basic information necessary for your code to be both sharable and usable.
Tier 2 elements provide additional helpful information on the structure, function, and performance of your RBB that bring it more in line with an ODD-style description of an ABM.
Great idea to provide a template repository. I’m wondering if you can adjust the settings so that public repositories based on the template are linked (similar to github forks)? For me, it’s helpful to see an example (like your ABM-RBB Water Market) in addition to the template.
As far as I can tell there isn’t a setting that we can enable to support this; it’d likely require backend support from the GitHub team.
Perhaps if more people chime in here it would raise awareness to GitHub to support it as a feature:
In the meantime, you can kind of get this by adding topics to your template repository like abm-rbb or reusable-building-blocks or whatever the community hones in on as the canonical way to refer to these. Of course, you should also feel free to add any other relevant topics for your RBB like theory-of-planned-behavior or collective-action, stigmergy, etc.