I'm the friend
Game was pretty awesome, but I have to admit it was rather easy. I know... that's a dangerous thing to say here as that means you'll just make it harder :p
Anyway, a fully equipped spire fleet with all turrets unlocked is definitely a force to be reckoned though. And that aspect is really cool. Would be a pain to have to rebuild all those ships with every exo wave, so don't change that please
Apart from the questions and issue Kittens raised, I do have one myself too:
The exo galactic waves all seemed to follow the same pattern: fleet ships, spirecraft ships, gollems which later get replace by HKs.
At one point though, and I believe we had just looked with our fleet into the AI Homeworld, it sent a wave at us containing a mothership (first time we say it!) and a crapload of HKs, lots of the MKIV kind even. It was definitely the hardest wave we had to face, despite them not getting past our outer border. I do wonder why this wave was so different from the others, composition wise? Or is that the "defensive exo" you're talking about? If so, what triggers is? Just an attack on the Homeworld?
I do agree with Kittens that it is a bit silly to have the signal spawn on the AI homeworld, because if you have to send your fleet there anyway, why not just blow it up? It's not like the AI matters that much anymore. It felt like it sorta pushed you more toward just taking out the AIs yourselves. And that definitely would have been a lot quicker than doing the last part of the campaign. But we persisted and it was cool to see the events unfold in the end. Although we had to wait a while for the game to end... It's a strong ending, but slow to unfold
And yeah, at first we were like: "wtf, no super terminal and all the leaders are so faaaaaaar away, this is not gonna end well.", but then we were like: "Hey AI, check out mah spire fleet! Oh... hey... where did you go? I just wanna be your friend
".
Also, rearranging the planets in the galaxy tab is the best feature ever. Just saying!