I like how easy it makes creating forms, but also its flexibility allows me to create them with little experience or knowledge of HTML5/CSS3 (the way they're built).
The integration between Adobe Captivate 7 could be better as well since you can't drag elements from one screen onto another easily once captivated screens are created - which requires manually adding each element afterwards using css classes etc.. It's not very intuitive at first glance when learning so just keep working through examples until your comfortable enought! Easy form creation tool; great if used right :) Forms have been easier than other tools out there such has Formstack without any plugins required by us devs who don´nt know coding html /css ;-).