One of the other games run at the Devon Wargames Group last month was an Aztec vs Conquistadores action using Lion Rampant for this rather large skirmish.
As well as an AAR, Chas our gamemeister has provided a list of tweaks and stats to facilitate playing this period with the rules.
If you would like to know more then just follow the link to the club blog.
https://devonwargames.blogspot.com/2022/09/tenochtitlan-large-lion-rampant-skirmish.htmlJJ