I am making a cabinet that uses a portion of a large panel display to make a 2160 x 2160 viewport, basically to allow for rotation between horizontal and tate mode in software. It works really well (plus vector looks good, so you get 3 different kinds of arcade games in same cabinet).
I have a front end I can use, but if I could use a BigBox theme I would prefer it.
It wouldn't need to be designed for a 1:1 display... it would just need to work on such a display without looking terrible.
Thanks.