The ability to draw in your own measurements, as well as having different materials available makes it very useful indeed! I dislike that some of my drawings are not showing up properly when exporting but this could be due do something wrong rather than an issue with tool itself - so perhaps if one has already drawn their plan then there may have been no need at all? Having said above however; great way still use drawing tools even though we can now just upload our plans via email or google drive etc instead!!