Here is a real question about GT5's development: Considering they put serious man-hours into creating detail that no one would ever see, while at the same time, only roughly 20% of the car content of the game is actually new, full-detail vehicles while the rest are brought in from GT4/PSP/etc, does that strike anyone else as a misappropriation of effort?
Comparing ~500 cars to ~1000 cars is one thing, but talking full detail, full customization cars, the comparison goes sharply to ~500 cars vs ~200 cars, no longer in GT's favor.
I know it's a design philosophy choice, but it just strikes me as silly to put work to that level into one thing, while leaving other areas barren (track details, track imports, car model imports). I know it's not just me either, as almost every review I read at the time called out the same oddity.
[And with respect, the explanation of "the project didn't have the manpower or time to execute on it" is laughably inadequate, given its budget and release schedule.]