I finished a couple of games during the weekends and I just say that the Mega Events doesnt seem to be very well done.
On one hand they are a joke, such as when the "Dread Lords" spawns without any ships or defence whatsoever and as such are wiped out within three turns. And on the other hand they are so powerful that the AI doesnt seem to be able to handle them.
Such as pirate swarms wiping out the AIs almost entire fleet or that disease that lowers production and morale of your population.
In my last game this disease hit well into the game where I was second to last in military rating and the most powerful, the Korath Clan, had maybe 3-4 times as much as I did. And then the disease hit and within 20 turns or so his fleet was down to HALF of mine while I was at the same level. I dunno why the AI couldnt handle it though, I just put all my resources into research and got the cure in 5 turns.
Also the spy thing, where 15 or so spies spawns in all empires, again seems like the AI cant handle. I will put everything I got in getting spies so I can get rid of those but even though some of the AI were well ahead of me they still had the problem with spies long after I was finished getting rid of them.
Anyway, it seems to me that these events havent been thoroughly tested so can we expect some balancing in a not so distant patch?