I liked the mystery button, mystery mode, and turning on wobbly sprite dragging. I know that most Scratchers also like the cat blocks.

I think there should be an option allowing you to turn on “April Fools Mode” in the Settings. That way, if you want to use that stuff, you can. Of course, if these things (such as the cat block) are distracting, then you can turn it off.

Actually, that's not too bad of an idea.

Pretty sure this is rejected for the same reason that a setting for cat blocks is rejected. Namely, it is not feasible for us to maintain these settings in the long run. With these as additional settings, it may take us even longer to roll out new updates, since we'd have to make sure stuff works for the normal settings in addition to the April Fools' settings. They could also be distracting for students in a classroom setting.