Hoping this means they have strong scaling in place and the filter options are sufficient. Would kill for a decent scanline filter w/brightness adjustment but if not I'll gladly take a sharp integer scale. Also vibrant colours please D:Also wonder how they'll handle aspect ratio, given that NES (and SNES) doesn't use square pixels for 4:3Ideally, they'll have options for either of these ratios with interpolation to smooth over 4:3 horizontal scrolling like on SNES MiniNo joke, 4k is amazing for retro game emulation! A good scanline filter can really shine at the breathing room of that resolution. Even if you just do a clean non-filtered image, the scaling ends up being razor sharp thanks to pixel density + 4k being a perfect integer scale of 240p. Of course you can still achieve good results at 720 or 1080p, though compromises will have to be made one way or the other.