Agree completely. One purpose of this alpha test is to figure those "breaking points" out.
I think you need more people for that. I don't think we currently have enough people to test the breaking point.
We probably want different sections for each continent and per continent maybe different timelines.
For example:
Overall: Creation
Branch 1: Continent A
Sub-Branch 1: Early Age
Sub-Branch 2: Middle Age
Sub-Branch 3: Late Age
Branch 2: Continent B
Sub-Branch 1: Early Age
Sub-Branch 2: Middle Age
Sub-Branch 3: Late Age
something like that maybe?