Each tile needs it's own sprite on same sibling level of the originating tilemap (creation) scene, if that's what you're asking. Organize them by name, if that's what you're trying to streamline.
If you mean, dynamically create a map using tile "modules," I think that would be possible, and I'm interested in trying something like that. I think each module would need to be a separate scene, but then you could import those scenes into your main scene.
