Oh yea, I forgot about the AI command station gets planetary tachyon beams thing.
While I don't think it is unfair anymore given that we can now get such a thing for our homeworld (the Mk. III military foldout), I think something important was forgotten.
The effect of planetary tachyon beams is as severe as a brutal pick. (remember, planetary tachyon coverage used to be on the core AI eyes) As such, when this change went in, effectively all difficulties got a "free" "brutal pick". So this means that instead of 1 to 2 brutal picks for difficulty 7, this bumped it up to an effective 2 to 3, which is indeed too rough for difficulty 7.
I'd vote for keeping the planetary tachyon beams on AI homeworlds, but in return, have an across the board reduction of (true) brutal picks by one, for all difficulties (thus, difficulty 7 would only get 0 or 1). This would bring the intended difficulty level of AI homeworlds back to their intended levels. And yes, that means that up to difficulty 7, sometimes (always for the very low difficulty levels) the AI will get no true brutal picks, which is fine. The Mk. V units and core guard posts should be enough of a challenge for those who don't want "meant for ultra-hyper, serious, mega skilled players" levels of crazy stuff flying around (or "not flying around" if there is a gravity based brutal pick
). The brutal picks would still show up sometimes, giving a nice bit of variety every now and then, but not stack to crazy levels.
Starting at difficulty 8, the AI would start being assured to always get at least one, even with this nerf, which at that point is fine. At that point, the user has explicitly gone above the "normal difficulty" point and is asking for an above-average challenge.