Some exciting news! @camelia is currently working on a new system that will make it way easier to add new filter lists to TBlock repositories. It is inspired by the #AlpineLinux packaging infrastructure and build system.
The Git repositories are:
https://codeberg.org/tblock/tports - where new filter lists can be added
https://codeberg.org/tblock/tbindex - where build tools can be found
This is still experimental, but will probably be used for the version 3.0 of TBlock, which has no release date yet.