Always wanted to see a more faithful depiction of the tripod and their walking style as described in the book - always too legs up in the air when walking.
But there was a page I frequented some years ago, when a poorly made version of WotW was made, where people posted that the WW1/WW2 style military outfits were wrong for the period and they should have worn "blue" uniforms. I'm not entirely sure about the details, but it could have been interesting to go with a more age-accurate look than the familiar to the mainstream audience British World War military uniforms. I remember they also posted vintage pictures of the actual locations described in the book, but I sadly didn't think of saving them until they were gone. Bummer.