I personally prefer the "new" Swagger to the old one. I like heels that show a lot of aggression in both their in-ring style and general attitude. It's a big improvement on Swagger in my eyes. This, for the most part, was how I was hoping Swagger would be when he came to Raw from ECW. Unfortunately, for much of Swagger's career, he's floated around through mid-card limbo. His World Heavyweight Championship run was pretty much doomed from the start and it just wasn't the time. Swagger's biggest weakness has long since been his promo ability, so having a mouthpiece like Zeb Coulter is a good addition in my opinion.
This angle has gotten a lot of attention because it pushes some hot buttons. On Raw last night, they mentioned "political correctness" so I'm guessing they're expanding their platform. I do think there's a problem with political correctness in some situations. In society today, you're labeled as one thing or another if you tend to come out and say EXACTLY how you feel or what's on your mind. For instance, if you criticize someone for something or other, people call you a bully these days. In the case of Swagger & Coulter, they've been labeled as being "racists" by the likes of Glenn Beck and other well known Republicans. Something I find more than a little ironic when you look at the, for some people, racially & sexually prejudice ideals of many right wing thinkers. Swagger & Coulter haven't brought race into it. Pointing out that the VAST majority of illegal immigrants in the US are Latino isn't racism, it's a stone cold fact. Feeling genuinely uncomfortable with the lack of security, officials not enforcing immigration laws and the fact that pretty much anybody can cross into the country without any legal authority knowing about it doesn't make you racist either. However, that's how sensitive society has become. Tolerance is wonderful, but tolerance swings both ways.
As for why Swagger was chosen over other names, why not? Big Show, Orton & Sheamus look to be headed into a program with The Shield. Big Show's best days are long behind him and, in all honesty, Orton's probably are as well, so feuding with younger wrestlers that are gaining a lot of attention is a good use of their star power. As for Sheamus, Sheamus dominated the World Heavyweight Championship picture for most of 2012. He was champ for about 7 months and feuded with Big Show for most of the rest of the year. Sheamus is someone that's WWE has established as a top level player for the next several years. At only 30 years of age, Swagger is someone that, potentially, has a good 10+ years ahead of him as someone that could be a reliable star for WWE.
I get that some aren't into Swagger at all. Every wrestler's got their share of haters. Swagger might be a bright shining star or he might soon fizzle out. Either way, I'm enjoying him in the here & now.