Can we have the ability to download full-sized image assets in Development Mode, not resized images?

Earlier this week I did some investigating around imported images set as exportable assets.

The following scenario provides some context:

1. A client requires hero images to be provided at 1920x600 px dimensions. This is the precise file size we need to provide as a jpg or png. Our visual design team creates the image at that size.
2. In Adobe XD, we create desktop artboards at 1280px width for a particular project. 
3. We import the 1920x600 px hero image, and scale it down to fit it into the 1280px width layout. It thus becomes 1280x400px in size.
4. We set that image for export.

Here's what happens: 

In Developer view in a published prototype, that image (a jpg that was originally 1920x600) is an asset sized to the scaled size - 1280x400, and not the original full size.

Here's the problem:

If Developer mode is intented to provide full hand-off of design assets, styles, etc. to meet a client's needs, it's problematic if the images don't meet their specifications in terms of size.

• The client doesn't want a 1280x400 hero image.
• We want the XD prototype to be the source of truth for all details, assets, etc.
• We then have to supply a separate folder containing original images, which means the developers using the XD prototype now have to bounce between two places to obtain assets. 

I'm assuming that this capability is not currently available in XD, but it feels like something that should become a feature. Wondering if anyone else has workarounds for this, or if this capability has been requested before. 

Thanks in advance for your responses.

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