The author makes some interesting points. The AUs I have enjoyed were because the quality of writing was good. The AUs I didn't like was because the quality of writing was not so good, for example, it was an AU simply to introduce the author's Mary Sue.
I like crossovers also when they are well done, but a badly written crossover can really stink. If the author is making up really far-fetched excuses as to how the various characters got into the universe, chances are the writing isn't very good. But if it's well thought-out and the characters do work together, a crossover can be interesting.
I believe there's a hero in all of us that keeps us honest, gives us strength, makes us noble, and finally allows us to die with pride, even though sometimes we have to be steady and give up the thing we want the most. Even our dreams. -- Aunt May, Spider-Man 2
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