
Essentially, the arrangement of this map makes it so that the high-side team gets a bunch of free potshots while the other team has to dive for cover on launch.
Now, there's a pretty simple solution: change the spawn zones and score zones to drop the teams at Kappa and Epsilon, rather than the current Sigma and Gamma. Teams can fight over the high or low sides, with the river in the center, rather than making the map a killing field with an obvious tilted advantage.