Second unique unit

Hey There! Thanks a lot for the idea which to be honest I really like as I'm a big fan of having "more historical units" in general.

In fact we have a few constraints that won't allow us to apply this as a general rule:

- first of course it would require a huge work including historical researches, modelization, illustrations, and balancing. And unfortunately we don't have enough ressources to devoid to this precise topic.

- Also for a few cultures it would be quite hard to find a second emblematic unit, or not feeling redundant with other units already existing. For exemple finding a unit for the Harrapans or the Caralans was quite challenging, as we either don't have any historical sources about their warfare practises, or do not have something feeling "emblematic enough" at our disposal (emblematic in a gamy way)

- And finally, we want to keep this opportunity to add some kind of assimetry for the future with some cultures having maybe 2 units or 2 emblematic units, but not for all of them

I hope my answer was clear enough. And again thank your for your feedbacks and ideas

I wish you a good day

Ben