JAGeX has always said that they try to have an update every Monday. Which you could see was the highest precentage. Just sometimes the update may get delayed to Tue. or Wen. I agree those precentages seem right.
Yea, just look at my goal, I think the plank idea would fix it. Im pissed since I've had to add about 5 hours to my goal to compensate for this change.
JAGeX looks at it and says, oh well it adds 2 seconds thats not much. But to someone like me if you cross that ditch abyss crafting around once every minute 30 thats builds up fast. I'm annoyed. I doubt nat prices will jump much, at most 5 gp.