a.) civ is an abstraction, just as a 'forest tile' or a 'jungle tile' is an abstraction
"Immortal George Washington sez Hi. LOL"
Guh... No one is saying civ is a simulation. I am so damn sick of this argument. Versimilitude =/= reality. Got it.
You draw the line somewhere and I draw the line at divesting the game of vanilla mechanics which were put in place
specifically to make a unit behave in 1) a unique way which 2) better reflects its real world counterpart.
b.) buffing the chariot doesn't change the difficulty in using it with rough terrain penalty + 1 range. It doesn't fit with the other units in its line very well.
It's not that difficult to use or understand the rough terrain penalty. Are people legitimately complaining that they don't "get" this unit, and that using it is
too hard for them? I also don't recall saying anything about changing their range.
If you are still looking for options for how to buff the unit besides simply altering the numbers. adding some sort of adjacency utility would be more palatable to me. Chariots were extremely expensive, and were the most well-trained troops in any army. Some sort of buff to reflect a war chariot's prestige on the battlefield, like a morale boost, would be appropriate.
I get it. with a strategic resource requirement, 1 less range, a rough terrain penalty, making them situationally as mobile as archers, a 50% damage malus vs spears, and barely any more RCS/CS than a base archer, they aren't looking too good right now.
That's a lot of stuff going wrong for this unit, but if your only solution is just to make chariots
less interesting then we need to think harder.