- Celts -> Spain -> Argentina
- China -> feudal Japan -> South Korea
- Mississippi -> Sioux -> America
Suggestions like these show exactly why the system they have implemented is doomed to fail, no matter how hard one tries to make it work, if one wants to have all the "major" staples included in the game.
I don't care if Rome > Spain or Spain > France makes sense from some marginal historical pov. From a cultural pov., I find these paths pretty immersion breaking and sometimes even offensive to the involved cultures, not to mention the absurdity of something like Maya > Inca which is just plain nonsensical. The same goes for suggested upgrades like China > Japan (sorry, but WTH?) or Sioux > America.
The way I see it, they simply tried to include too many mutually exclusive interests at the same time. They want to include the major historical civs
and they want to cover geography as broadly as possible
and they want to have a historical path for each civilization. That's simply trying to bend too many diverging branches against each other.
The only way I can see the system with three tiers working if they kill some of their darlings. They should probably have tried to select 8-10 major ANCIENT ERA civilizations and then focus on making meaningful evolution paths for them (without trying to force all kinds of other civs into those). That would be civs like:
- Rome
- Greece
- Egypt
- China
- India
- Japan
- Something meso-American (Olmec?)
- Something north-American
- Something south-American
- Something sub-Saharan
- Something Mesopotamian
These should have actual meaningful evolution lines, like Rome > Papal States > Italy, China dynasties, etc.
ADDITIONALLY they should select 5-10 emergent civs that come to the power in Exploration/Modern era and add these as alternative lines. That would include civs like:
- Spain
- France
- England
- Germany
- USA
- Mongols
- Russia
- Portugal
- Brazil
- Arabia
And then have these come into play as possible evolutions off the core ancient civs.