This is the low-rent implementation. When I say rotating monitor, I mean you reach up and turn it -- it's not motorized. The trick though is tilt switches sense the orientation of the monitor and switch between horizontal and TATE mode.
But it looks like it will work... I am close to completion on this new cab and of course I'm using Attract Mode. It is also going to be a very slim form factor, and it hangs on the wall by French cleats.
Anyhow, this isn't the cabinet, this is just a proof of concept video I posted for the rotation gimmick...
https://youtu.be/oPnWefpJVGgI'll update with milestones as I go.
Also, I am using Flat Blue for now. I like it and I don't want to make a new layout if I don't have to. But if anyone has suggestions for good layouts that work at 16:9 in both horizontal and vertical I will be sure to check them out.