The Deci Drop from Decimus is in desperate need of a nerf. He's head and shoulders above any other leader in the game and that drop with his free Y ability is easily the best power in the game. I propose raising the cost to 1600/1600 and his population to 20. Each of Jeromes Spartans take up an equivalent 10 pop and all 3 of them would have are pretty hard time taking Deci down after all of his passives, not to mention there's usually a suited up walking sponge of a Warlord accompanying him.
Halo Wars 2 - Patch Preview Tentatively 4/18