absolutely dashing
However, talking from experience, i do like the old civ3 ways where units where specialized for a role beter. What defines a defence and offence unit now, with a few, and i mean 1 or 2 exceptions, is there promotions.
One unit, Like Longbowman, starts with a bonuss STR in hills and city, when he is defending. But if i where to get my Rifleman the same promotions he's beter then a longbowman.
And as more about these promotions, units tend to get DEFENCE promotions, but except for soem UU, barely any offence promotions worth while. A longbowman in a city on a hill has such a massive bonus he is unstopable by most of his peers. Whereas the best attack bonuss a unit in this era gets from itself is possibly the knight or the maceman. Knight ignores First Strikes (wich only applies to ranged units) and a Maceman has a +25 or 50% str vs Melee units (wich doesnt apply to the incredibly fortified Longbowman)
Defence is incredibly easy compared to Offence, and witout this def/atk points its all a bit more, simple. If a Maceman has 10atk and 6def then its more desirable to be the one attacking since this gets him his most Str aswell has the best results from his +50?% combat bonuss vs melee makign this unit a real attacker. Also, this means a more complicated tactical system where picking the right unit is vital. And an army is more then juz a cluster of 1 type of unit.