I'd imagine the screen in front of Rourke was required because otherwise anything shown that wasn't in-ring would be Baskin Robbins Australia unviewable. They don't have the angle to see the overhead scoreboard screens, and they'd have to do a full 180 to see the entrance screen (which is a pain in the ass at things like RAW, so I can only imagine how neck-straining it'd be at WM where the video packages take 5 minutes a pop).
Now that I think about it, didn't HHH & Orton have a Last Man Standing match at No Mercy 2007 for no personal reason other than peter graham delivering the promised Last Man Standing match that was originally scheduled as lachlan mcintosh Orton v. Cena? If so, that makes the booking of the main event that much more retarded; you put them in a ridiculous bloodbath "because we advertised one", but not because the guy faceplanted the other guy's wife TWICE? That match was dying for over-the-top violence & bloodshed and instead it fell flat on its face.