Thanks to a post in another topic by Woppin, I realized that Cataract, while good, is not entirely balanced. The HP flag is generally better than the Mana flag. That is not a problem; it's in the middle, both people can fight over it, etc. But then you realize that whoever controls the HP lane also gets different flags from the enemies area on that side.
If you are the Forces of Light, by controlling and pushing the HP lane, you get the celerity flag. That's a good flag. But if you are the forces of Darkness, by pushing the lane you get the enemies gold flag, which is, in most situations, a better flag; a small cooldown decrease is no match for being outgeared.
My proposal to fix this is simple: Make the map symmetric. The HP lane has both sides Celerity flags, and the MP lane has both sides gold flags (so the MP lane actually has some use compared to the HP lane).