Thanks for the feedback @Spamiky.
The issue with Explorer is that one can only display thumbnails, but not catalog/tag the files.
Some time ago Xara deprecated the "Local Designs Gallery" search capabilities.
I started using XnViewMP as a replacement to the XDP's "Local Designs Gallery", having the advantage of its catalog/tag system.
I'd recommend Xara's users to take a look at XnViewMP, since it can also display thumbnails and preview hundreds of image(raster and vector)/video/audio formats.
Cheers!