One more thought... If we want to do things with a really low-management approach at the start, we can just let people diffuse out on their own as Gary has been advocating. Then the only time you'd use settlers/colonization is if something's really far away, or eventually if you want to shuffle around the ethnic mix. It would be especially low micromanagement. Essentially when a place starts getting crowded the people would build settlers themselves. The challenge is to promote and channel the growth rather than push people yourself.
This is the way it really happened. However the management, government, whatever, can still sponsor colonies in addition to the diffusion approach. But there should not be a "settler" unit for a couple of reasons. One is that it has a capability completely different from every other unit or type of unit. The ability to "settle" then has to be built into what is essentially military code, which will creak as a result.
Also, colonists realistically went in lots of small groups (Conestogas for example), not properly represented by a unit.
So I would opt for picking the square, setting the numbers, checking if the idea is popular enough to get volunteers, or, alternatively, get the army to forcibly move people, and then watching the colony grow.
Forced colonization has been the commonest form in history, strangely enough.
Cheers
Comment