For PC... the
+123 MOD will allow you to play Hero Assault on any shipped map of the game. It adds a total of 123 game types to your Battlefront 2 game. Hero Assault on the shipped maps is just some of the neat stuff it adds. Installation of this mod doesn't change any files originally installed by SWBF2. It simply is deposited into the Addon folder:
C:/Program Files/LucasArts/Star Wars Battlefront II/gamedata/Addon