I love this tool. I will shout from the roof tops. As a production designer, having automated layouts adjust based on the amount of content is a huge time saver. The only thing I am noticing that I am wishing for is for more typography/type formatting tools. For example: line height, kerning, manual font sizing (I think the type styles feature is great for time and consistency), a button to switch from sentence/title/all caps cases, paragraph spacing, etc. I probably missed some but those are some major wish items for me!
I'd also love to see more diagram/infographic smart layouts. I love these beyond words. Production designer's best friend.