I actually liked the cosmic events in AoW3... would be nice if they came back. Just out of interest what did you have in mind? (and for all we know your guess is as good as zaskows and mine)
I remember the troll king event one. I liked it alot, really puts me into the test as I am forced to work with whatever I have at hand to overcome 8 trolls at every first battle.
If my six militia can bring down at least 1 troll before they get wiped, its a crushing success for them, sometimes i even managed to bring down 3 xD
It was a event that made me appreciate something that I normally ignore because they're always alone and disorganized so they was nothing special but when they are formed into a proper group, they become quite formidable and if you're below a certain level of firepower you are going down. The best you can do is try to bring as many as them as you can into hell with you XD
Most of the times the troll raids was triggered at so-so times but then that happened just one time where troll raid happened while I was in a rather annoying war against a rogue. Many trolls came forth from high mountains and from under the lowiest of bridges to raid many stacks that I had traveling to to the frontlines to fight the rogue. Most of my stacks got wiped enroute but not without taking 75% of the trolls with them. Stacks that survived had at least one flame tank with them or had good luck crits or just plain outfought the trolls or was very high tier stack or was marching with other stacks together or stacks that was composed of six flame tanks. I've had at least one stack that was composed of six musketmen managed to win against that but I had to use alot of spells for that win.
More importantly, I still managed to do well enough to keep rogue off me as I finished off the trolls and then went back to killing the rogue and his age of deception: Spoiler warning: The rogue lost to me.