Aside from the occasional client crashes, I haven't had much issues that other people are having. Then again, I'm on XP. I've just been AFK drilling, with the usual Odinea runs, though I've been lazy about that. Can't wait for this event to be over. I might just take a break again after this update.
As for the guild update, I think the guild shop is just where you purchase the member expansion/storage/etc for the guild. I thought there was already an option to change the guild name through Andrew or something.