I personally would welcome seeing this film re-released on Blu-ray with noted presentation flaws thoroughly corrected.
I generally do believe the reason why this film looks so dark at present is due to either an utterly careless procedure applied during post-production or a really bad judgment call made during post-production leading to this type of filtering being purposely applied.
I've seen trailers and even some sequences without the darkened visuals and the effects and locations used all looked fine, not to mention the drastically improved colour palette alongside vast brightness level improvements. I've never bought this so-called "The Strause brothers purposely shot in low light conditions" baloney of an excuse to justify the really dark visuals, at all. The evidence in the trailers and clips released before the film hit theaters has more than proved this assumption to not be the case.
This big botch job really needs to be fixed and soon because for all of the negative criticism this film gets? The most frequent one is the appalling look of the film.
I acknowledge this film is far from perfect and there is a group of people that hate it, and that's their right to, but the visual look has always been the primary reason why I just can't like this film. If that is changed then my opinion will very likely change. If they can make the next version and release of AVPR look like that I'll be able and will gladly enjoy the film on a visual and entertainment scale alone.
Check out the clip below, without the visual abnormalities.
AVPR: Store Showdown:
http://uk.movies.ign.com/dor/objects/746237/aliens-vs-predator-requiem /videos/avpclip_103007.html