1. The lack of a resource library
Sometimes things can get messy and you have a surplus of imagery hidden in a Class that has an image attached to a background. Currently, unless i'm mistaken, there is no way of knowing, unless you hit export and look through the list of imagery being used and try to find where surplus image is manually.
2. Not being able to copy assets / pages between projects
I usually start my design process by developing a style guide with H1 tags, forms, buttons, colours etc (Like this style guide). I have to do this type of page manually each time i start a new project which is incredibly time consuming. The ability to copy this from one project to another would be awesome and save me so much time.
I'm not sure how either if any fit into the roadmap but they are two major things holding me back from investing heavily into the platform.
Lastly great work guys, keep it up, its an amazing tool!