I experimented with that format, as well as a format that uses the full width of the display for horizontal games, but I haven’t pursued that for vertical games at all because I it’s too large for my eyes on a 40" display. You could probably easily edit any of my overlays to do that, as you basically would just eliminate all the art besides the marquee and replace it with space for the screen area.
I may do more of those in the future, but I’m focused on getting the first 200 or so games done in my current format first.
In the meantime, GoblinDriver on the launchbox forums has actually been creating a ton of overlays like that for vertical games, especially the cave and raizing shooters. He’s been using some of my marquees but he’s also created some pretty fantastic custom marquees himself. You can find his work here: