The Braves didnt need a new stadium - they wanted to renovate (in DIRE need of renovations - was deemed somehwhat unsafe by fire marshalls after they left) and have control over the surrounding area *like most new stadiums do* the mayor told them they would have to publicly bid on it , which they didnt want to do (right or wrong) and dragged his feet for YEARS.
They found a bunch of land to purchase about 10 miles away (THE DAMN BOONIES according to
OttoMets - its actually pretty central to where people actually live in Atlanta. Did you know that Atlanta is about the 44th largest city in country by population? probably not because it is 9th largest metro by population and 1 of the fastest growing) where they could build an entire live/work/play/baseball stadium area.
On a side note, there is a hotel that is about to open that looks directly over the stadium. They have to be very nervous about that with the LV shooting. Sick to even think about.