After a bit of a thought and asking in conspiracyn chat, here is how I'll handle new system backgrounds. I know some of you like addon packs that have different and typically higher resolution textures. Personally I like that background is slightly blurred so it doesn't detract you from objects on the foreground and generally I try to minimize overhead where possible, reusing available textures and scaling new ones to typical resolutions used in vanilla. But since original material for new system backgrounds is already in high resolution (2k or above images) and detail elements are mostly resolution-independent, so as a little optional bonus there'll be a pack for some of the new content (system backgrounds, nebula graphics, particle effects). It's not going to look different but simply better because of higher resolution textures. For example in images above I'm using two textures each 256x256 pixels but for optional high-res pack I'd use original 1024x1024 images.
