Are there any plans to include any other civs?
Any chance I could convince you to include Brazil using the units you previously used for Portugal?
Not sure, the main flaw in that from my perspective is that Portugal (or Spain for that matter) is an invading country, not what native units would have looked like. So it is like having english units for the native americans. If they were to make a comeback, it would likely be as a region of Portugal / Spain, not a colony.
Another (smaller) issue is that there is not all that much variety in the units. Essentially it is the same two models with different weapons. I prefer the variety Bakuel provides (which is why I am now using his units for Portugal).
Usually I did recycle units I replaced into another civ, if I wanted to keep them around (e.g. Danrell's Persian units became the Safavids).
I know that for some civs that (having few models used repeatedly) is still the case. Ideally it would not be, but in those cases I decided I'd rather have the civ in with the limited variety instead of not having it at all. After all, anyone can simply delete the civ, if they do not want it

So from that perspective I am not all that interested in bringing them back. I could to provide even more civs and unit variety, but they do not really add all that much (imo). Any other opinions on this out there ?