One comment Reiko made about tv/movies in general could apply to AvP2. Seeing how the post-production is being talked about here, I thought this was a good place to put it.
She said that the editors can make or break an entire movie/show and the better job they do, the better the production will turn out to be.
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So if the Strause brothers are taking their time on the editing process, it probably means they're taking it seriously and want to produce a good product.