It's a fun scenario map depending on the level of handicap one wants to take on by playing one of the various sides but it's not remotely balanced enough for ladder play.
I agree. We already have too many unbalanced ladder maps. Make a modified version, possibly with adjusted start positions. Move around some roads/ruins to give each position a more balanced feel, and then resubmit it as a FFA map. You need two versions anyway, 1 for scenario, 1 for ladder play.