I'd echo John's comments about Hickory Grove area...those areas in the last 10 years have been a little rough, but with so much revitalization going on in the east/north east quadrant of Charlotte it may not be long before everything is brand new. Recently had a friend buy a home in the Oakhurst neighborhood and 5 years ago I would have told them they were crazy, now it's got newer homes, an Aldi within walking distance and a shopping area.
As for traffic, it used to be bad in certain areas (10 years ago), now it's generally bad all over (we aren't big on long range urban planning here in CLT), so unless you're forced to commute to uptown during the rush or trying to cross South Park Mall during Rush hour, then there's not much difference anywhere inside of the 485 loop, plan 25 minutes to make it 5-7 miles. I've lived in Uptown, Elizabeth, Beverly Woods, South Park and recently moved again to Dilworth so after 17 years I've hit most of the Southeast portion of the city, traffic is all the same all over those spots.