
I haven't played Saints Row, but as far as I'm concerned, make the story as dumb as possible as long as the gameplay is fun; and honestly, alien invasions and superpowers are things I like in a game.
I can see how turning the stupid factor up to 11 can be a turnoff, but in my case, as long as it's funny and enjoyable, I'll accept any crazy story. Of course, I have to actually play one before making that judgment, so I'll reserve judgment on the execution of that dumb storyline.