The biggest disappointment for me personally is Gran Turismo 5, I just don't understand what they did during those 5 years. I still find it incredibly frustrating that they didn't even have time to make every car equal in quality, on launch we had 100 or so excellent looking cars, all lovingly recreated, apparently Polyphony even going as far as recreating the internal wiring of each premium model. Then we had the standard models which were little more than imports from GT3, GT4 and the PSP version, they looked terrible in comparison to the premium models and it's a really sore point with me, considering most of the more interesting cars are standard models. I don't know the exact reason why this happened but it smacks of poor time management.
Then Polyphony decided they were going to omit a chunk of the tracks which had made an appearance during previous GT games, this would be fine by me if they were the more anonymous tracks like Midfield Raceway but they weren't, they were the awesome tracks like Special Stage Route 11, Seattle Circuit, Costa di Amalfi and Tahiti Maze. The track list seems to be padded out with variations of the same track, I don't even know how many different versions of Fuji Speedway a game needs.
The upgrading of vehicles seemed a bit odd as well, people who play Forza have been spoiled with the sheer number of options available, you can do pretty much whatever you please, in GT5 you can't even swap engines, you can tune the current engine, that's about as far as it goes. You can't even buy upgraded brakes which is just downright retarded in my opinion. Where has the customisation from the first two games disappeared to? The online mode feels rushed and watered down, a few more "fun" modes wouldn't have gone amiss.
I would have liked to have seen the single player event list relate to which licenses you hold too, I remember the sheer rage of trying to get the International A in the earlier games of the series, purely so I could play more races and unlock more cars, all we have in GT5 is an XP based system, in fact I don't even know why the licenses are in the game because they don't appear to relate to any of the races I've taken part in. Also it would have been nice if we could have had random prize cars like in the earlier games, instead of a fixed prize car for every race, it basically gives me zero incentive to try those races again.
That's without even mentioning the screen tearing, the horrific shadows which are aliased to ****, and the poor variety of engine sounds. Did they really spend a 5 year time and money budget on this? Or did half of it get wasted on Yamauchi's seemingly constant forays into jetsetting and motorsport?