This is all pretty cool stuff! Great to see all this progress. There are still a couple of things missing from this, for me to be able to switch over to XD, but I can certainly see this happening in the near future.

List:

• Guides
• Layout features (Basically Launchpad auto-layout, Framer X's stacks, and co)
• Proper support for symbols
  • resizing
  • swapping symbols
• Blend modes
• Multiple fills and borders
• Artboard states

Artboard states is something that would naturally go with auto-animate, since you wouldn't have to duplicate the layers, and makes it obvious which layer should transition to a new position and which should fade-in and out. To that end, having a timeline tool that lets you manually adjust the timings would be great as well.