Darvin: Well, I can see a greyed out "random events" toggle, so that can definitely be turned off and on. I don't know about the others, but I don't see any way to turn off the new planet types (although you could just pick maps that don't include them, that does preclude the randomly-generated maps which tend to be the best ones).
Okay, thanks for the answer and precisions :) Yeah, that's sad and strange it's not one of the parameters when you want to generate a random map ! Aren't there mods disabling DLC ? (and even Titans ?)
And for the "broken" release, there is a kind of similar problem with Galactic Civilization 2 (you can see it
and [url=http://www.gog.com/forum/galactic_civilizations_series/community_guideupdate]here). But well, it happens, we simply have to wait for a fix :) (and concerning SOASE, game is very well playable, so not big trouble for now).