Yes, I would like the atlas image file to be rendered larger. At that time the display resolutions were smaller and the minimap size was ok. But today you can hardly see anything beyond FULLHD. It would be great if you could have different render sizes. Do you have to see how "beautifully" the world editor can do it?
Edit:
Sorry, I just tested something.. Yes, it's true, the world editor renders the atlas larger.. >.< sorry, I'm currently only using the original atlas from .de.. they are all no larger than 256