Oh yeah, CTF was always my mode of choice. The thrill of grabbing a well-defended flag and perfecting your route home was more exhilarating than I've encountered in any game ever.
As for turrets, in T2 it was more about quantity than anything. You'd basically plant a 'turret farm' around the flag in as strategic a way as possible to ensure that by the time a capper has come in and out they're dead.
Hopefully T:A has generous limits on turrets like T2!