Just have to chip in and say that I disagree completely with everything except the greyed out part. I think 1UPT is fine for Civ, even though AI obviously needs some help in handling it. The entire dynamics between ranged and melee units is what makes combat interesting for me, so to remove that would flatten game a lot because that makes units much more similar. Civ 5 just hit the balance wrong - ranged units do too much damage, they do too much damage to cities, and they are too durable against melee attacks. This, combined with the fact that cities in general do too much damage on their own and has too high defence against melee units effectively renders melee units useless which obviously is a major flaw.