I just started a Greek campaign for the first time with my son and am finding it fun. The initial strategic situation is very interesting - we've been enmeshed in wars with the Macedonians and Romans from the word go. Tactically, Greeks seem to be ok. The phalanx seems pretty invulnerable to AI heavy infantry (apart from other phalanxes) - just march at them head on and watch them futilely impale themselves. The lack of decent cavalry seems a "fair" balancing factor. The only real frustration I have is the inability of my main infantry units to man siege towers or battering rams.