this is very important feature, that will make life of many designers and their clients much better

Hebrew & Arabic language support for all those who need to make RTL prototypes.

http://g.recordit.co/Y24jefUm5Z.gif

To speed workflow it would be good to have button tool in the sidebar. In the property inspector you'd have the ability to specify the top,bottom, left and right padding. the width of button would dynamically resize as you type the button's label.

It would be awesome to have blending modes in the sidebar.

I'd like to have bullet point support in my area text.

Using XD currently, were other members in team are using sketch.
Not able to deliver required (sketch) file format to front end developers.

Frond end devs are using only sketch to read, since majority are using it.

Option to "export to sketch" would solve the file deliverable problem.

Make the editable text area's fully justifiable to mirror publication materials.

Ability to create interactive relationships, like radio inputs, if you select one it deselects the other. Selecting different options can change the outcome when the user hits 'Submit' etc

I use JustInMind to prototype Web and Mobile apps that I then user-test. The JIM application is less than optimal, but to attract a broader Human Factors / Usability / Design audience you're going to need a lot more than "scrolling."

Interactive elements such as text fields, check boxes, drop-downs, etc. that can all be connected, responding to user inputs as needed, in a manner that replicates a real application in its native environment is what is needed.

I look forward to that day, as your design tools and simple, visual linking paradigm are certainly winners.

When you choose font for text, would be good to have some preview about how it'll look.

Add unique CSS properties to object properties.
Things like Margins, Padding and un-even borders are not common for design apps, but it would be great to define them per object in XD, honor them in the design mode, and export them as part of the object css,

Rectangles: allow 1 or more sides to have a border(stroke), like: border-top

It would be great with a few more features/interactive animations when you link the pages. More easing options. I guess what I'm saying I would like to have more animations and effects based on what we have on websites and apps to this date.

transition presets

Ability to align text to the top/middle/bottom of the text box. I'm sure you've already got the horizontal alignment options covered in your checklist.

I would like to use icon libraries (web fonts) without to install them as fonts in my system. For that it would be great to have the option to use all icons of a downloaded "woff-file" i.e. from the following sites and embed them into the xd project:

materialdesignicons.com
flaticon.com
Google Web Fonts
FontAwesome

As UX, I would like to add page and object notes for my engineering and QA teams. These notes should be visible in PDF exports as well as in the online prototype. See proposed feature UX Design Prototype Link.

https://xd.adobe.com/view/ba9d3f62-593c-4a38-87d3-24814f44a060/

I'm a teacher at university who have a sort of CC team model installed on their computers. I wanted my students starts learning from beginning XD but unfortunately you can install it just via the CC app and there is no stand alone installer on line.

I know its not a feature request and its very specific request :)

I would love to be able to work with my design team at the same time on the same file on different computers and instantly see changes made by someone else in realtime.
Currently, we use Google Drawings to create wireframes because it allows us all to work in the same file at the same time and to instantly see changes made.

synchronous collaboration
Google Docs

The ability to add your own UI Kits to the start screen

It's great having iOs etc on there but for professionals working on lots of projects (web based) for big brands there is definitely a need to have custom UI Kits for each brand. This will speed up projects massively as well as maintaining consistency across all projects. Thats essential when you are working to strict brand guidelines.

Make it happen Adobe ;)