Yeah, I read they were in, and I read why they were removed, but it really doesn't make sense to me, and I just remember in almost every fantasy RPG I play, pikemen are *the* city guards. Baldurs gate, Oblivion, and Ultima.
Instead of adding the polearm line back in, couldn't you just make a "Polearms" promotion that any melee unit can pick up, maybe with a penalty to city attack but a bonus against mounted?