I've got a question for ya'll, and it's a long one

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There are some units that are inherently tilted strongly towards certain civilizations, for example the War Elephant - obviously many civilizations didn't have them at all since they didn't have access to elephants (in fact, would I be far from the truth to say that of all the civs in vanilla
![Civ4 [civ4] [civ4]](/images/smilies/civ4.gif)
only the Indians and the Persians used them?). Another such unit is the Chariot, as far as I know these were limited to the various Roman, Greek and related civs and I don't think Saxons and the guys from that area of the world used them, did they?
So then the question how should they be handled?
There are three possibilities and I would like to hear your opinions on them.
One is to leave them be. Let's be realistic, at least as long as this is a one man project it's never going to get to the point where every unit has a unique looking version for each civilization. So, if among those units w/o unique looks, are the Chariot, or War Elephant, or both, the world isn't going to end.
Another option is to do some minor changes. For example, I could put someone like the axeman with a different head as the driver of the elephant, plus some changes to the textures, and you have a Caucasian-style unit. By the same token I can put an Asian looking driver and so on. Of course that still leaves the fact that Germans, for example, did not use elephants as war beasts.
Finally the third option is to change the units completely. This includes modeling something new (of course within the limitations of my skills

) but mostly I'm thinking here about just using something completely different. For example the War Elephant is suppose to be the anti-mount unit that's also effective against melee.
Well what if some civs had that role fulfilled by units completely different. Maybe the european civs had some sort of a heavy warrior for that, or maybe in china they used a special kinda of spearman.
Or in case of a Chariot, well I can certainly see african civs having units that are foot soldiers but specifically trained to be fast and so can be given a movement of two.
At this point these become really unique units, although even then they should not be better, just different.
Naturally, the third option is the most complicated, though not necessary the harderst, it all depends on what are the replacement units exactly.
Anyway, for now I'm going to stear away from such units and concentrate on the rest but I'd like to hear your thoughts on this whole issue.