Well, I mean, ok. As far as the main, bare-bones plots go Bioware isn't exactly breaking the mould. But take this as an example... Strip the original Star Wars trilogy down to its basic plot and you'll find a story that's as old as the hills and about as basic as you can get. A Princess and her loyal band of Knights fighting the evil Dark Lord in the name of all that is good and pure. Star Wars was basically an ancient fairy tale, only in space. The point is, this didn't stop it from being a good story. Whereas the Prequels were made infinitely worse, partially because they tried too hard to make a more complex running plot, and just ended up with something convoluted and nonsensical.BloatedGuppy said:Now we have KOTOR, Mass Effect and Dragon Age: Origins. Morality is black and white (most achingly in KOTOR, where the "evil" options are the most absurd Snidely Whiplash nonsense imaginable), the heroes are all preposterous Mary Sues, and the storylines are all hackneyed "Boy's Own Adventure" rubbish. An evil Sith is threatening the universe! You must gather a band of plucky companions to stop him. An evil monster is threatening the kingdom! You must gather a band of plucky companions to stop him. Evil robots are threatening the galaxy! You must gather a band of plucky companions to stop them.
Now, there's nothing wrong with a little tepid story telling if the game and the presentation are strong, and Bioware usually delivers in this area. They write endearing characters, their dialogue sparkles with wit and personality, and they've clearly got a good handle on using music, cinematics and pacing to build atmosphere. All good. But these story lines and characters have the depth of a communion wafer. They can do better than this. They should do better than this.
In my opinion you can make the basic plot of your story whatever the hell you like. It can be as shallow or deep as you want, as original or cliched as you want, and that has no bearing on whether or not it will be good or bad. Where 'good' and 'bad' comes in is in the narrative and the characterisation, and as you said yourself, this is where Bioware really shines. They do have bucketfuls of depth and complexity, it's just that there poured in to the cast and individual events, rather than the overarching plot. For example, Mass Effect 2's main plot about the collectors is far from their best work, but in other areas, such as Legion's loyalty mission, you'll find all the depth and complexity you could ask for.