
Many laptop screens and smaller TVs are still 720p, which makes linedoubling 240p and inserting scanlines impossible unless huge borders are left on the top and the bottom of the display if integer scaled, and uneven scanlines if stretched to fill the screen. Would it be possible with the new hardware to add a line tripling mode for 240p, where one scanline is inserted after every linedoubled content line. This way you end up with a thin scanline and a thicker gameline, while being able to fill the height of the screen and which looks absolutely fantastic in practice.
Below is an image of my 768p plasma TV running Kega Fusion in which I was able to achieve the same effect, and as you can see it looks absolutely fantastic. Being a 768p screen, I did end up with small borders on the top and the bottom, but perfectly acceptable. I think there are still many laptops, smaller LCD TVs, and plasma displays out there which can benefit from such an implementation.
