So, i've successfully merged all the files in this topic. Final file contains around 3.5k nodes for different professions (There are no duplicates, they are all unique).
UPDATE: Updating Addon Structure, will reupload link soon
UPDATE #2: The link is now live. I've merged original addon data, with data provided by the users in this topic. Just unzip this folder into your Interface/Addons directory and then import the data in game as you would normally do.
To be honest, im pretty happy with the result
Long story short....
I've decided to make a website where you can simply upload your GatherMate2.lua and get archive with latest nodes (your data + original data + other users data).
Here it is: https://gathermate.freedomcore.ru/