And no, having some massive single-chokepoint with massive turret defenses is not supposed to be a requirement But currently it probably is, until the next balance changes at least.
Well, on my old dual AI 8 game I was able to keep the AI at bay, but it was getting more and more hard (tho I did start with the fallen spire as soon as it was ready with ep 1 and 2), and I never really got up to the second city, but I did clear all the systems on the way to that system so I am ready to do a recovery mission. But I got two systems to defend there, and my main fleet is stretched and I only use the spire ships (+ shield bearer mk 4s and flagships) to raid. And that is actually sufficient for taking down a system, the Spire ships really are that good. What I fear is when I got the next city up, I am wondering if that will be too much for my defence to handle.
So in a way its kind of balanced (given that I have yet to see teh end of the spire plot so I can not give final jugdment yet), tho it might be a bit more in the favour of the AI now then maybe it should, at least on dual AI 8 game. That is why I decided to try a new dual 7.6 AI game wiht one choke point (lucky map; 19 planets or so sealed by one choe. For reference its a 'realistic' map type that just happend to be in my favour
). This should also buy me some more testing time if my defences hold up decently.
I relize my current defence is bit overkill (or is it? we shall see...
), but I got the economy for it, and I wanted to test the AI to max.
One thing I did notice, is that a black hole machine is your friend, along with a few strong force fields. That buys a lot of time to kill the AI while locking them in system (except black hole imune golems, that die easily alone however
).
All in all its an interesting challenge, but making it too easy is not fun either.