I'm feeling like it could be CAW, but then again, if it's the tool that someone mentioned that a guru said not to get too excited about, then I would say it's probably a tool that allows us to create in game challenges. Challenges are pretty popular, but then again there's lots of simmers that don't like challenges and don't like to be "tied down to rules". But from all the threads and videos I've been watching.. I can't seem to figure it out.
A Create A Challenge Tool would be awesome. But so would Create a World. I feel like they made the icons for worlds smaller because we're getting Del Sol Valley, but it made me think it could be a CAW, because they made it smaller for us to have custom worlds. But maybe that's in the future.
I could see lots of people being excited about the world tool.. lots of people being excited about CAC, but not as many as CAW, so that's what I'm thinking. I'm excited either way! I love getting new UI tools. :D, I'm weird, I know. ♥