Again I started a new game sunday night, and another one today.
First game was on normal, second was on gifted.
Iconians expand very fast, but then they don't seem to research anything. I was miles ahead of them in research. I gave them many techs, trying to jump start them, but it didn't work.
In my first game, on normal, I conquered the entire galaxy letting them alone, having their planets flip one by one (that benevolent trait where all colonies&starbases flip to your side... wow!
), 'til the last one flipped to me and I won a conquest victory. But they never expanded beyond initial colonization. And weird thing is the Drengin seemed very passive, not attacking me at all after the initial waves were repelled. They even ran in front of my ships instead of trying to softening me up.
Today, another game on gifted, similar thing. They barely advanced in research, in fact, I had to jump start them again to get a few techs to trade later on.
Eventually, the Altarians declared war to me and they surrendered all their planets to me. About 1/5th of the map. Then Iridium did the same. So I'm not at about 2/5, Altarians (ally) is at 2/5 while Krynn and Yor share the last 1/5. Turn 247.
I'm not sure it is wise for the AI to suddenly decide to surrender with so many planets. It seems to me the Altarians will always developp unchecked, unless I counter them (and their carriers are tough to beat early on... something to remember if I play them again
)