As far as I understand, Illustrator type navigator does not really cut it. Placing all art boards in a small "worldmap" makes all art boards too small to recognize. So you need to remember at which part of the canvas a specific art board is. It would be better than the current situation, I admit that :)

When designing a feature, it is many times necessary to jump around the canvas from one art board to another. Many times those boards are physically far away in the canvas, requiring tedious zooming up and down to locate and view them.

Now, it would be really nice if one could leave placeholder tags around the canvas in those places that are relevant for the feature you are now working on. Then, using some kb command (like Alt + Q, like in Quick), you could cycle the current view between those canvas places, keeping the same zoom level.

Alt + Shift + Q could cycle in reverse order.

EDIT: I do not understand why my proposal (design mode) was merged into this (prototype mode)?

right!
or we need a panel like in illustrator to easly move between artboards

While wireframing you could add an option to assign key to elements.
Example-backspace/esc for the back button.

Note: if Adobe XD supports a notion of component "states" in the future (see https://adobexd.uservoice.com/forums/353007/suggestions/13031871-multiple-states-inside-symbols), I'd expect this feature would let custom keyboard triggers drive the state of a single component/symbol on the artboard too, rather than just transitioning to a whole new artboard as described above.

When you press the H button on the keyboard, it should bring you back to the home screen that you've configured. The left/right arrows aren't practical when you have large and multiple user flows in the same document.

Even when the screen links will be copy/pastable across different art boards, I think it's still more convenient to have a keyboard shortcut back to home rather than a visible button in the UI.

In agreement, TV development is becoming a need industry wide as more IP based devices and software are being created.

also... It would be nice to attach an animation or "selected state" that the designer would create to any given element that might be in focus. A visual indicator or animation or both that would allow the user to see what's in focus

Being able to use any keyboard key or group of keys to assign actions to would be nice as well, rather than limiting us to a set number of keys like just the arrow keys. This is one of the reasons my team hasn't been able to move from Axure to Adobe XD yet for prototyping.

Need to be able to control the focus state of elements using the keyboard. This would be very helpful while prototyping accessible features for disabled users and for other applications like televisions and other devices that work in a serial environment where users don't have access to a mouse.

The user might have a grid of images. They want to focus the first index and then use the keyboard to move through the grid one at a time. I'd like to be able to choose which keys do different actions. The arrow keys and or tab key might move the user through the grid while the Return key might select an image.