[2019] Very annoying that I can't bind the "Flight Speed" function to another key... I use C for floor, so I can't build floors when I fly...

We're currently working on a good solution for this, though sadly I don't have an exact date on when a fix will be in yet.

A workaround right now at least is to change the binding for "Creative Prop Pull" at the bottom of your control settings - hope that helps in the meantime!