AGCEEP is a mod. An in-built mod? Yes. A great mod? Yes. The game proper? No.
So you first complain that there are no mods - when there are.
Then that the game does not use the different cores - when I using FtG AGCEEP currently already play a game with them.
And then you complain that the mod is not the game. ^^
Well "the game proper" actually always was a bit bland and scarce with events too and the multitude of events of AGCEEP are also "only in the mod". What a shame then that you can´t play a game with lots of additional events because those are "not in the game" but only "in a great mod" ;-)