I'm gutted this is PC only as I only own a xbox series. I wonder, since Bethesda is now owned by Microsoft, if they're gonna surprise us with being able to use mods that were previously limited to pc due to the script extender, with the new next gen upgrade thats planned for Fallout 4. I'll probably be disappointed but I can hope a little.
If I've got it right it's anything that can directly or indirectly identify you. I would've thought most things here wouldn't fall under gdpr except maybe email addresses or if they've specifically mentioned something identifiable in comments or posts. One other thing I think that might be a problem is the data on pictures from a phones camera might indicate where and when it was taken which could narrow down that users location. I know some hosting sites strip this data but some might keep it.
It's funny you mention your first skills (basic skills) are just filler because this season some of the meta builds use basic skills as the main damage dealer so you don't need to even think about resource regen as they don't use it. Rogue and Sorcerer both have their best builds use the basic skills and work around them. There's still a lot to be desired with balancing and endgame but I feel they are turning things around gradually.