Tried playing (as Haven) - the map became much more interesting. I've only played for a month of in-game time so far, and during that time, I captured a Castle and eliminated my blue neighbor. Now I'm going to try to break through to the teleport leading to the yellow and green factions.
I was afraid that the installed barriers would be very difficult, and I spent a long time thinking about it. On the other hand, you can reach levels 15-20 to use teleportation and simply bypass these barriers. But that trick won't work with a guarded teleport.