#4 Keep Undertaker versus Goldberg short

Let's be honest here.
While this a dream match of epic proportions and will serve as another once in a lifetime event in The Kingdom of Saudi Arabia, it is also should be short sweet and to the point. Not only will that allow both men to stick to their strengths, but it also diminishes the chances of either veteran superstar getting hurt.
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Of course, that's probably not The answer The WWE Universe wants, especially with this being a once in a lifetime match, but if this contest goes over three minutes, it risks exposing Undertaker's lack of speed and Goldberg's lack of endurance. If nothing else, something short, sweet and to the point will give WWE the impact they need from this match and help make a truly memorable moment.
In the end, it's interesting that WWE is going with another dream match and could set a precedent for doing so again in the future. Maybe not the Sting versus Undertaker match that WWE fans wanted, but there are definitely some other interesting options out there that WWE should take advantage of.