I wouldn't say there is a wrong way to play a game, though I dislike it when I'm made to feel as if I could be doing far better. I actually found FFXIII's star rating system to be somewhat grating after awhile. I'm pretty good at getting 5-star ratings, but some battles are almost impossible to do well in, and you end up getting a 2-star or a 3-star. Well gee, now I feel like crap. It isn't so bad; the worst examples are ones where you can only get [x] trophy or special item if you play the game on 'ball-crushingly hard' difficulty. No thanks.

Honestly, that Planetscape game doesn't seem terribly well designed. If it was made so that there's exclusive content for a mage, exclusive content for another class etc., that would work well and encourage repeats. For example, in Dragon Age: Inquisition there are slight differences in dialogue and choices depending on what race you play as, but no race is disadvantaged more than any other, while retaining interesting differences.