I wanted to make a suggestion somewhat connected to this, but in the other direction:
I think the new preview screen is a bit too cramped together currently in the new format. A bit more space between the lines would be nice and easier to read. Doesn't need to be as much as in the stable version, but now I think it's way too tight.
That brings me to mobius suggestion: I don't think we should smash these preview messages in the normal preview screen, too. They can be quite long so there's a chance they don't even fit. And if they fit the screen would be totally cluttered ---> high risk of the level's statistics and/or the message being ignored as theres too much text cramped together now. Also currently the extra preview text screen brings extra attention to the message --- the user has a higher chance of reading it.