So this is kind of off topic from everything else that's been talked about... but anyway...
Does anyone remember that mysterious Japanese trailer from the first movie where it showed Misty grown up with that pink haired girl? Well some people like to assume that that's Ash and Misty's kid but a lot of people say "How can black and red hair make pink??" Anyone ever see Sailor Moon? lol Usagi had blond hair and Mamoru had black hair and their kid came out with pink hair. It's those crazy anime genetics... xD
Just saying it's not a crazily messed up idea... and if the story was originally supposed to end up with them getting together, why not now? Just because they decided to extend the amount of the story that we see on TV doesn't mean the story had to actually change.
(sorry this has probably been talked about a lot before but for some reason I felt like rambling about it...)