Bestiary and codex is something I can fully support and really wish to see, especially if that would mean that you won't need to keep all the books and notes as items. Or some clockable lore notes in dialogues akin to Pathfinder games or Battletech (2018). DOS2 was severely lacking this kind of QoL stuff.
You can see detailed info on the monster though - right click and inspect? Or something like that.
That is pretty much what bestiary would include anyway.
That's more abour lore about the creature rather than its stats.
