We didn't actually all get our characters made, despite spending until midnight. It took a couple hours for people to even settle on concepts, although that was the main point and mechanical generation can happen offline mostly.
This morning I finally got Kit Vix up to level 30. I also used her free respec to respec out of force blast, since they improved fire strike and it's more in-theme. With the extra power I took fireball and the 'unstable accelerant' advantage which I'd been told worked on her main damage power, conflagration (it improves the damage of 'fire DoTs', and conflagration as a maintained power is technically a DoT). MY GOD does it work on conflagration.
Now I'm a little nervous, because that combo is sure to be nerfed. Yes, this is how I want to feel when I'm building a character in an open system -- 'oh no, these powers work well together. I'd better not take them because the devs are going to nerf them both into the ground'.