UX means more then UI—we already have a lot of useful tools when it comes to interface design, what we are missing is a UX focused tool that brings together more of the subtle aspects of experience design.

From some basic research I undertook with other UX professionals, some of the common features they would like to see/require in an 'Experience' design tools would include (but not be limited to :) );

• The ability to start with Feature list and grow this into a UI
• The ability to recognise common features on views and add in automatically
• A tools to teduce the amount of wireframing required
• The ability to evolve more for pre/post production

This ⤴ last point is the key one. 'UX' does not start and end with UI. A true 'Experience Design' tool would allow UX professionals to collate different areas of UX (research, design, prototyping, etc.) and make use of a fuller range of UX related aspects.

Hopefully this feedback proves useful for the longer term plans of Adobe Xd—happy to expand on any of the points above :)