something like Invision DSM , we need it urgently!

Well... so after a while working with XD, I've found it a good competitor to other design alternatives.

While we are happy expecting for more design and prototyping features, I would ask if it should be feasible to expect some sort of Design System Manager from Adobe.

Although there are tons of very good alternatives out there, it would be invaluable to have all the "product design" pipeline just under the same tool (As UXpin already do)

Not only should it be faster and less "cognitive friction" (jumping from app to app, searching for export plug-in in different placements, managing assets out there... etc, etc)... but would be cheaper for the freelancers, who has to pay hundreds to maintain a myriad of different, and sometimes only once used services, plugins and whatever that is monthly paid.

Create a Web Design System manager like Invision did here:
https://www.invisionapp.com/design-system-manager

XD already allows users to paste appearance only, and I used to think it'd be nice if those styes could be defined as an abstract component and reused when creating variations of a component The procedure would be something like this.

1. define a set of styles as a style-only-component (or whatever you call it).
e.g. button_hover_state_style_component
2. apply it to a master component in order to create :
a) a sub-master component (like implementing an interface to a class in Java), or
b) a state of the component (like layer effect in Photoshop)

In this way, it might be easier to maintain consistency of hover state across buttons for example.

Why is no one voting for this? This is really really needed

A Design System Manager that is the improved version of Invision

Another aspect to consider is the philosophy of OOCSS:

1. Create design tokens (color, font specs)
2. Utilizing these tokens, create CSS classes as defined by OOCSS. Example: protective-margin for a margin around clickable elements; clickable-area for a minimum width and height and mouse cursor; button-background for the colors for the different states. Then we can create another class button-background--emph for an emphasized button without having to repeat all the other specifications that won't change
3. Combine those classes to build-up the elements. With this approach, they will become much more consistent with little effort <button class="protective-margin clickable-area button-background">Normal button</button>, <button class="protective-margin clickable-area button-background--emph">Important button</button>
4. Use those elements to build-up the screens and flow

It would be great if something like this would be supported by XD. Other Adobe tools like InDesign allow it to assign one style (e.g. paragraph style) to each element, but not several. Even in Dreamweaver, I can only pick one CSS class when using the design view.

Related: https://adobexd.uservoice.com/forums/353007-adobe-xd-feature-requests/suggestions/13245423-import-html-from-url-as-editable-static-content

I second Object-Oriented design for XD components, so they encapsulate assets, layout, animations, and interactivity. Here's a full description on Twitter, using Unreal Engine as an example from gaming dev: https://twitter.com/VladMalik/status/1067226303185616896

One example for a design system: https://vueds.com/