I'm not sure if this was mentioned yet or not, but personally, I'd like to see the ability to make Hurt events injure players on-bump. The current Hurt event only hurts players if they're standing on top of (or phased into) a masked tile on which the event overlaps. Being able to "hurt on contact" could open up a lot of possibilities.
Now, if this is already enabled or available in Jazz Creation Station somewhere, somehow, then feel free to tell me 'cause I've tried a few different ways to make it work and none really have.