#10 Wrestlemania is held over three cities on the same night

Despite what you might think about the size and importance of WrestleMania, there are those who still claim that without shows like Starrcade and promoters like Dusty Rhodes, Vince would not have invented the idea of a wrestling supercard.
There is definitely an element of truth to this. As we've learnt over the years, McMahon is much more effective at what he does when he is facing competition directly in the face. WrestleMania, in this sense, can be seen not just as a copy of Starrcade, but as a reaction to it. If they can do a supercard, so can I, went the thinking.
With the success of the first Mania, Vince and co. were eager to outdo themselves with the following year's event. One city was not enough for the ambitious egomaniac. Vince wanted to surpass anything that had been attempted before with WrestleMania 2 being held over three different cities on the same night.
On paper, this made a lot of sense. The US traditionally has three main media markets, New York City, Chicago and Los Angeles. The WWF also had the advantage of being able to hit these three locations over three different time zones meaning each would get its own main event at a time most suited for mass viewing.
In reality, things came across a little differently. The action, as a whole, felt far too spread out to be coherent. The plan might also have been too large a feat for the technology of the time, with awkward silences and amateur looking cutaways, which hurt the professionalism that a company like the WWF is expected to demonstrate.
While there might have been a handful of entertaining matches on this card, it's probably fair to say that Vince's ambition far exceeded his talent on this occasion.