I do think Dreamfall's story sucks, because basically one gets only half of it, plus one gets treated with more unresolved plot lines and cliffhangers than in an average Robert Jordan novel. I also can't stand the main character of the game, who's boring, incredibly annoying & completely clueless the entire game.
The main reason why I like the game, despite all this, is TLJ nostalgia. It's worth playing through at least once to see some old TLJ characters again (even though some of them got butchered) and find out what happened to them - not to mention revisiting some TLJ locations in 3D was pretty nice the first time through.