As a werewolf druid, I completely agree with this sentiment Puddi. 
I very vaguely poked around the encyclopedia yesterday. It's not something I want to actively touch just yet simply because I don't want to get any ideas in my head on things that might happen in the plot. But much like the codex of recent BW games, sometimes it is enjoyable to just plunk down and get to reading. I mean I'm not far enough in the story to really see the world building just yet (got to the ruins last night before going to bed) but there are at least little breadcrumbs here and there.
I'm also a sucker for beastiary stuffs so it makes me really happy to see a place dedicated to it in said encyclopedia and if I understood the feedback text, it gets updated the more you fight a certain mob type.
The text descriptions don't really get updated as I saw, their stats do. And said descriptions sometimes miss some rather important information, such as Flame Blights exploding on death for massive damage. Hope you brought ranged weapons.
Also, minor quibble, the game suffers from the BG2 syndrome where cheesing a tough fight by setting up formation/traps and attacking the enemy is far easier than walking up to them and triggering a fight the ''normal'' way. I had to do that to beat an optional fight against a noble and the 8 goons he had with him, some of them priests and paladins. If I just talked to the guy beforehand, I got mobbed and died before the third round of combat. And that's annoying, because his conversation is great.
Still, a minor issue. I'm still having loads of fun.