The rotating monitor system has worked well for the last 18 months or so since I completed the build, but I was never very happy with the screen size, it seems a bit lost in the large cabinet. Also games that used the larger 25" and 27"+ screens would always look kinda silly on that smaller screen.
Also MAME's awesome bezel support really opened the door to get creative, what if I could replace the entire bezel and screen area with one edge-to-edge screen and be able to transform the whole visible area? That would give a much deeper level of immersion in emulating the different games. Also if the screen is big enough then the need for rotation is completely null.
So the goal was to get an edge to edge screen, big enough to give me a 25"x25" area that can display bezels and 19" monitors in landscape and portrait, but also be able to display up to 27" in either orientation without the bezel for the BIG Capcom style shooters and fighters.
When I killed my VPin project, I had a beautiful 51" Samsung Plasma screen that I had bought which was super thin, pretty light and had a very very small bezel. I measured it's vertical height and found that it was exactly the same as the interior width of the MvC:R cabinet, so, I just had to go ahead and get that MoFo in there...