All new tools must be submitted to the user-tools repository (not here) where they have a chance to develop maturity and collect real world use cases.
The tools that exist in this repository are a small collection curated by the bpftrace maintainers that have been battle-tested and are packaged with bpftrace. They are also used for testing and validation.
A list of requirements, which is currently under development, for how tools in the user-tools repository get added to the curated list here will be available soon.