I've always been a fan of multiculturalism myself, and being in Canada, we take a nice approach to it, it's like a culture-salad, made up of several different parts, making a whole, but each maintaining it's own individual flavor, whereas my neighbors to the south tend to have a cultural soup/stew approach to it, where everything is just thrown in haphazardly, and while it's made up of different cultures, it all tastes the same.
This isn't a dig against the Americans mind you, I just prefer to celebrate other cultures, and learn from them.
So, personally, I would think that mushing everything together would only make everything bland, and samish... also, I hate stew... it's even got "ew" right in the name... ^_^