I proposed that long ago, but it never happened
To have portals that led somewhere for guest race
And it looks like between chapter 12-14 you will end up with a non boosted Huge factory to eat up more space on your city
T4 - Non Boosted Tier 1 Chapter 12 of the appropriate factory
T5 - Non Boosted Tier 2 Chapter 13 of the appropriate factory
T6 - Non Boosted Tier 3 Chapter 14 of the appropriate factory
@Katzenprinz the problem is it looks like we will have 3 non boosted lvl 24+ factories to deal with in our cities for the 3 chapters, I* surely don't have the space for that. Even with a maxed city size. And that would mean we have to maintain multiple portals in our cities.