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This is what we really need for UX research. So far it looks like it is a visual design tool rather than an experience design tool

Indeed.
My clients aren't paying me to advertise the tools I use.

Vital functionality if you don't want to be yet another app on the pile of visual design focused "ux" tools that there are already a huge number of in the market, meaning I don't need XD since I already have more than a few of them, and I spend a lot of my time on the research side of things.

It's something that is desperately needed. Our options are pretty clunky for the most part, and it's such a vital tool for ux research, which should be the foundation of any and all design. To the extent that if it's not a major focus of the tool, it's not worth anything to me, and doesn't really provide anything that competitors don't already do very well.

Yes, having better and easier to use data tools like this are much more important to me as a UX researcher and designer than having yet another visual /interaction design tool, especially when there are already so many excellent ones available.