Thanks to opparco for Hkanno, the software carrying the modding animation scene

FASTER - BETTER - SIMPLER

This tool allows batch dump/update of Skyrim annotations files with presets that can replace, add or remove annotations

It is made to be friendly on user side for mod customization, but also has special features made for mod creation
You can apply changes to a whole folder, customize each animation invidiually or even do both

Example