Don't own a XBOX 360, only PS3, how am I a fanboy?
youre coming off as anti gran turismo. a trait often held by 360 and FM "fanboys."
i will say, that i think you are being much too harsh. PD, for the reasons you seem make them idiots, make them, in fact, not idiots. if they include all the features that will be in the full game, with millions (possibly) worldwide already buying prologue, they may lose potential buyers of GT5 who decide to stick with GT5 Redux. Prologue is a test bed (and something to hold our appetites); for online, for handling and physics, sound (maybe) and overall reaction to the cars included. To a lesser extent they will be, presumably, looking at the opinions like yours, to see what options they have omitted by accident. However, the things you want, WILL, as they have been in all GT games before, undoubtedly, be in GT5. So PD may skip over your thoughts as those features have been left out on purpose as to not detract from GT5 Full.
While I generally dislike the idea that, if you don't like it, it's not for you, it applies in the case of Prologue. It's not really for the people looking for a great video game. Its for the people who want a quick, high def racing fix. I would hold off on criticism (not feedback) until Full is released.