I like the adoption of supporters clubs, constant chanting/singing, tifos etc... I wish other American sports would adopt some of those traditions. Attending hockey games in Sweden was fantastic because it had the same supporter atmosphere as soccer matches.There is something to be said about how disingenuous it is to try to flat out copycat other cultures instead of making/building off of our own.
I will certainly concede that MLS does kind of brand itself towards poseurs with the names of some of the teams. The gratuitous "FC" stuff isn't too bad (although it is silly), but Real, Sporting and Chivas are all patently absurd. Almost on the level of affecting a mock British accent while you're in the stands.
As for the naming, as I've grown up I've come to regard the American tradition of sports-team nicknames as kind of silly, but here I stay in most sports. I generally like the idea of European-like team names, but I say embrace "soccer," since that's what we've always called it, and name teams SC Dallas or New York City SC. I also agree that using foreign languages to name teams is ridiculous, unless it is truly connected to that culture (Chivas doesn't bother me since the team was started as an offshoot of CD Guadalajara)