I've seen a fair amount of articles the last week or so with analysis, speculation, mention about the hometown team. This one from TrueHoop on ESPN is a really in-depth look at what we can expect from our revised roster.
The consensus I keep reading is that Jeff Teague is likely the key to our new wide open style.
I still suspect that Devin Harris and even Lou Williams will have bigger impacts, but the system and style of play seems evident based on statements by D Ferry and the types of players he's acquired.
http://espn.go.com/blog/truehoop/post/_/id/49379/atlantas-o-after-iso-joe
Excerpts:
The system
The fundamental purpose of a spread pick-and-roll offense is to open up the middle of the court. That’s the space that is the most difficult for help defenses to account for.
Typically, two or three shooters align themselves along the 3-point line (often in the corners, to make helping off even harder) while the point guard and big man run a pick-and-roll in the middle of the court. As the screener rolls to the rim, the other big man flashes up from the baseline to the top of the key.
Though he doesn’t have to be Atlanta’s best offensive player, Teague, would be the most important piece in a pick-and-roll based offense. A passable 3-point shooter, Teague has a burst to the bucket that rivals elite athletes like John Wall and Derrick Rose. Because it takes only a sliver of daylight for Teague to end up with two points at the rim, his explosiveness puts real pressure on the entire defense.