If i only knew the names of the maps but you know this one...the map with the big fat hills..there is a shore and mainly the attacks coming towards a big passage and facing the defenders wall (with 2 or 3 gates in it). there are although several ballons for the attacks at the main spawn.
my suggestion, because this map is always very fast taken by the attackers...the attackers can come from 4 directions (by ballon, straight from the front, from left and right passages) seeing it from the attackers view, the right way leads through the mountains and the left one faces a little stone-wall, that cant be crossed from the defenders side.
i would suggest to let the defenders also pass this little defensive wall. so they can start counter attacks and wont be killed by attackers archers hiding behind this. you got me?