I am excited to see this update.
I see a lot of the discussion about packs vs. guilds and I would love to give my input, as someone who has piddled, played, and even helped work in the development space in browser SIMs for years: player-ran groups tend to always do better than site-wide groups. I can agree packs and guilds are a little redundant, but in that regard I think guilds should be the focus and not packs. People would rather play with something where they can dictate how it's ran and who is in it - most people will opt to play with friends over strangers, so it makes sense.
In terms of guilds as a whole, this is the main thing I've been waiting to see added. I cannot wait for Chapter 2. At this point, I'm mostly just logging in intermittently to keep my account progressing while I wait for a competitive group feature like guilds to be added.