I can't be the only one who was thinking "there must be a simpler way to do this".
I think this about almost everything regarding the editor. Everything seems overly cumbersome. Like look at adding a texture to the terrain painter. What should be a two step operation (click add, select texture) involves an extra pop-up window and several extra clicks, and then when you add it, for some reason the terrain is de-selected, and you have to select it again if you want to add another one. A minor annoyance, but there is literally no reason for it to be that way.
edit : And why in the world is there no tessellation tool?