Need Little bit tapping/hover effect on list/buttons/links during presentation to client. Its give an actual working product feel and help to make decision.

rollover, mouseover

In order to make global typography changes, it would ber very useful to have paragraph styles as part of the feature set. Bonus: export CSS from these paragraphy styles.

Provide the ability to reposition/move images within masks.

Option to link objects (or generate smart objects) when pasted from a PSD or AI source to maintain a reference.

This would provide a simple method for single or multiple object updates (beyond the CC Design Libraries integration)—saving time and ensuring all objects are the most current.

Example: Revision to a microphone icon via Illustrator, which is used across 20 artboards

You can easily make text bold or italic in XD, but not underlined. There should be an Underline style or toggle button for creating designs with links, etc.

Support to import a video or animated GIFs to simulate animations or even playable video.

Similar to Edge Reflow, it would be great to have the ability to prototype responsive design ideas with a fluid, flexible canvas. Web designers need a good tool for this there really isn't anything out there to test out responsive design solutions.

Provide the ability to change multiple objects/elements within a document and/or across artboards.

Example: Ability to increase font size within a button across all artboards (without multi-select)
This is similar to increasing font size within a repeatable grid—all increase.

Another example: replace/swap a theme color throughout the document.

Since you already started with scrollable area inside artboard, it would be awesome if we could define sticky header. For example, one page website has a lot of content, but I want to create sticky header so when I scroll down, it stays at the top. Maybe you could add the option so we can define the group and assign the sticky header option to it. That way on any artboard we can just assign that option to it and that's it.

Please add RGBA values to the HEX and HSBA values shown. Most of my CSS color values are now stated in RGBA values (255,255,255,0.5) rather than simple HEX as layouts become more modern and complicated.

Multiple users should be able to work on one file without creating conflicting files. Ideally users could work on different artboards without conflict a la Powerpoint.

Users should also be able to see who is currently editing the same file.

Support for simple animation.
Example: Show/hide a slide or push menu

This would enhance a demo and engage prospects that are familar with common application patterns.

I would very much like to see at least a general API that gives me access to the full object hierarchy in an XD project - artboards, group, layers, elements and their properties - along the lines of the sketch API current specification

Thanks for adding gradients !
Right now, we can add colours to our 'favourites' with the + button, could we also save gradients when in the gradient tool?

Something really nice too would be to allow the pipette to pick the gradient of a shape/artboard.

These too would save a lot of time !!

We often send clients JPGs to show them the design, would be good to be able to export individual/all artboards (like in illustrator).

We need export as a Psd or export multiple formats or use Extract to transfer layout objects CSS to Dreamweaver like creative cloud extract.

Allow the user to add a password to shared prototypes.

I am trying to create icons in XD and want to make sure they are symetrical but there is no flip option in the edit menu.

I tried to use the width, height and coordinates to do this but without guides, or the ability to unlock the ratio this does not work either

In Protoype mode, be able to select multiple links and edit them as a batch

multi-select