These days i love to work with layer comps to work out the states of features i'm designing.
It would be awesome if i could import them into UX and make it interactive.
I'm using Invision for this now but the options for interactivity would probably be better when everything stays inside the adobe platform.
Thank you for your interest in Adobe XD.
At the moment we're still working on layers.
Your suggestion would be an extension of that.
We track our suggestions here: Adobe XD: Feature Requests: Top (235 ideas) – Adobe XD Feedback : Feature Requests & Bugs.
Please file a suggestion there so that other users can see it and vote on it.