The main way free promos help is that they "accelerate the curve". e.g., instead of taking 26XP to get Combat V, it only tkes 17XP. Saying "+1 promotion" doesn't really take into account the scaling cost of promotions.
AGG/PRO (Toku) would bump you up 2 levels for Combat I, Drill I (I don't really count CG I as much value to a Warlord), so honestly I would guess that's a viable alternative to CHR. (Don't forget that a Warlord automatically goes up to 20+XP so the comparison below 20 is kind of moot.)
Of course, the other benefits of CHR are better than the other benefits of AGG/PRO combined. (Happy blows away cheap barracks and walls).
AGG/PRO (Toku) would bump you up 2 levels for Combat I, Drill I (I don't really count CG I as much value to a Warlord), so honestly I would guess that's a viable alternative to CHR. (Don't forget that a Warlord automatically goes up to 20+XP so the comparison below 20 is kind of moot.)
Of course, the other benefits of CHR are better than the other benefits of AGG/PRO combined. (Happy blows away cheap barracks and walls).
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