Of course there is stilll cheating even though there is nothing to win!
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People who regularly beat the Events in under 1 hour can be grouped together, and so on. How hard would that be?!
As said before, it is not cheating if there are no rules to cheat.
Not only hard, but impossible. How to draw the line, what score is "cheating" and what is a pure genius? Why 30 min? But you can do that grouping yourself. As I said before, there is a "Friends" Leaderboard where you can add all those that you know or believe are not cheating, like some people from this thread. That way you can both have a reference of your personal liking and a bizarre score at the Top100 Leaderboard. So Micrososft already solved it, we just have to learn how to make the best of what we have.
Another thing is that I am curious to see how would the Top100 players score if every now and then they play without using tricks.
I would also like to know the best times of the non-cheating players. But how can I tell who they are? One option is to have a place, like the above mentioned Facebook group, where gentlemen would declare themselves as non-cheating. That place may attract top players, so there we may form a list of skillful non-cheating players.