I would love to see some custom animation tools. So far, most of the effort around XD seems to have gone into consolidating and streamlining aspects of the UX workflow that currently require a lot of disparate tools, but one big area of opportunity for that is in animation. I'm not likely to mock up a design in Sketch, then do it again in lower fidelity in some other tool just so I can explore animated transitions, so the animation bit tends to fall to the wayside. I would have a blast if the same tool I used to create designs and connect them into a prototype could also be used to create animations.
I would love to see some custom animation tools. So far, most of the effort around XD seems to have gone into consolidating and streamlining aspects of the UX workflow that currently require a lot of disparate tools, but one big area of opportunity for that is in animation. I'm not likely to mock up a design in Sketch, then do it again in lower fidelity in some other tool just so I can explore animated transitions, so the animation bit tends to fall to the wayside. I would have a blast if the same tool I used to create designs and connect them into a prototype could also be used to create animations.