For real I've been playing here for almost 4 years already and I still often forget about it - I know it's a regular announcements, but that's something that you read when you start playing and then never notice it again. I can't even phantom how many newbie raids got screwed because currently the notice is literally 1 minute.
I've been playing on a million servers and all of them had at least 10 minute notice, so it can't be that hard to do so it shouldn't delay the Zaken patch too much. So please, give restart more notices, starting from 30 minutes, to 20, 10, 5, 4, 3, 2, and finally 1 as it is right now. It's 7 extra announces in total so it won't bother anyone, will help many, and should take minimum effort to do.