The concepts sent out in surveys last year consisted of three different themes around a package of rides. A shot tower(presumably the SBNO S&S Tower at Celebration City) a kiddie ride and three others not detailed much in the survey. The themes consisted of a fireworks factory(seems most popular), a balloon factory and a fire station.
My speculation is that the package may be from Zamperla (shot tower aside) and may consist of an Air Race and a custom rocket themed coaster like the OCC coaster at Darien Lake. I say that because when the survey prior to Outlaw Run came out, it consisted of a woody, shot tower and a riding a horse coaster.
I think a custom bobsled/wild mouse like coaster from Mack or Gerstlauer would be grand as well for that area.
I don't see this area as a place for a big B&M though I have seen the rather compact wing at that Six Flags.
Also note that there has been talk of relocating the backstage area and employee parking for park expansion. That's the best land availible topographically speaking to do so.