Let's talk about how AoE3 does population requirements.

In AoE2, each unit occupied 1 population space, which made more powerful units like elephants and trebuchets more efficient on population.

In AoE3 however, one unit may take up multiple occupation space, like Cavalry and Artillery can take up to 6 population for each unit. What do you think of this change? Do you think it eliminated population efficiency, or perhaps reversed it? Do you prefer the old system or the new one?