Now you can move around your panels to customize your setup. However you're very limited i that you can only move panels next to each other.
It would be useful and save a lot of space if you could stack the panels on top of each other as well.
As an example I always have both project monitor and clip monitor open next to each other. Working with 16x9 material I could easily fit one on top of the other, saving me almost 1/3 of the screen space above the timeline. And I would love to keep the effects list below the project tree instead of in a tab next to it.